How long is the flight from Glasgow to Portsmouth?

easyJet can get you from Glasgow to Portsmouth in just under 1h 20m. Your travel time will be generally consistent. There are 363 mi between Glasgow and Portsmouth. Most flights are nonstop.

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

What are the cheapest flights from Glasgow to Portsmouth?

While on average a flight from Glasgow to Portsmouth is generally £1,500, our data shows the cheapest flight currently is £57. When looking at the most popular route, (Glasgow Intl - Southampton Eastleigh), you can expect to pay £56 for that flight.

What are the most reliable airlines from Glasgow to Portsmouth?

No one likes to see their flight delayed. When booking a flight from Glasgow to Portsmouth consider choosing American Airlines (84%), Iberia (83%) or Finnair (82%) as they are the most reliable in getting you off to your destination on time.

How far in advance should I book a flight from Glasgow to Portsmouth?

Users have found that booking a flight from Glasgow to Portsmouth at least 59 days early can save you up to 117% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from Glasgow to Portsmouth for as little as £78 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as £129 for flights departing within the next 3 days.

What is the cheapest month to fly from Glasgow to Portsmouth?

The best pricing can be found in the month of January. Prices to Portsmouth from Glasgow average £75. You can even find prices in January for less than £75, as users have found deals to Portsmouth from as low as £36. The month of June appears to be one of the more expensive times to travel to Portsmouth from Glasgow. Flying in the targeted month can save you up to 19%.

Can I find deals for flights from Glasgow to Portsmouth that include hotel bookings?

Yes. In addition to deals on Glasgow to Portsmouth flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Glasgow to Portsmouth?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow to Portsmouth.

Can I find deals for business class flights from Glasgow to Portsmouth?

Yes. Cheapflights offers flight deals from Glasgow to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£28+ Cheap Flights from Glasgow to Portsmouth

Cheapflights Tip: The best prices from Glasgow to Portsmouth are usually found in March or February, booked 67 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Glasgow to Portsmouth

Round-trip from	£56
One-way from	£28
Popular in	July
Cheapest in	March
Average price	£124

easyJet
3/11-8/11
Nonstop
2h 40m total
Glasgow to Portsmouth

Search Deals

easyJet
18/10
Nonstop
1h 20m total
Glasgow to Portsmouth

Search Deals

Highest demand for flights based on searches. 16% potential increase in price (£16 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 4% potential price decrease (£4 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Glasgow to Portsmouth

Cheapest flights from Glasgow to Portsmouth
Explore the most affordable flight options available from Glasgow to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2025.

Mon 3/1110:05GLA - SOU

Nonstop1h 20measyJet

Sat 8/1113:55SOU - GLA

Nonstop1h 20measyJet

Deal found 2/9£56

Wed 1/1007:10GLA - SOU

Nonstop1h 20measyJet

Mon 6/1011:50SOU - GLA

1 stop9h 55measyJet

Deal found 2/9£84

Wed 15/1007:10GLA - SOU

Nonstop1h 20measyJet

Thu 16/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£86

Fri 5/1215:50GLA - SOU

Nonstop1h 20measyJet

Sun 7/1218:20SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£88

Sun 5/1007:25GLA - SOU

1 stop4h 00measyJet

Tue 7/1012:25SOU - GLA

Nonstop1h 25measyJet

Deal found 3/9£97

Thu 16/1009:35GLA - SOU

Nonstop1h 20measyJet

Thu 23/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£100

Mon 3/1114:35GLA - SOU

1 stop5h 05mMultiple Airlines

Sat 8/1113:55SOU - GLA

Nonstop1h 20mMultiple Airlines

Deal found 2/9£103

Thu 25/906:05GLA - SOU

1 stop8h 15measyJet

Fri 26/912:25SOU - GLA

1 stop10h 25measyJet

Deal found 1/9£109

Mon 15/921:50GLA - SOU

1 stop10h 25mMultiple Airlines

Wed 17/909:00SOU - GLA

Nonstop1h 25mMultiple Airlines

Deal found 1/9£112

Best flights from Glasgow to Portsmouth
Discover carefully curated flight deals from Glasgow to Portsmouth that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 3 September 2025.

Mon 3/1110:05GLA - SOU

Nonstop1h 20measyJet

Sat 8/1113:55SOU - GLA

Nonstop1h 20measyJet

Deal found 2/9£56

Sat 28/211:50GLA - SOU

Nonstop1h 20measyJet

Sat 14/313:55SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£68

Fri 27/215:50GLA - SOU

Nonstop1h 20measyJet

Sat 14/313:55SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£77

Wed 1/1007:10GLA - SOU

Nonstop1h 20measyJet

Mon 6/1011:50SOU - GLA

1 stop9h 55measyJet

Deal found 2/9£84

Wed 15/1007:10GLA - SOU

Nonstop1h 20measyJet

Thu 16/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£86

Fri 5/1215:50GLA - SOU

Nonstop1h 20measyJet

Sun 7/1218:20SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£88

Sun 5/1007:25GLA - SOU

1 stop4h 00measyJet

Tue 7/1012:25SOU - GLA

Nonstop1h 25measyJet

Deal found 3/9£97

Thu 16/1009:35GLA - SOU

Nonstop1h 20measyJet

Thu 23/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£100

Direct flights from Glasgow to Portsmouth
Explore direct flight options from Glasgow to Portsmouth based on user searches, and compare prices and availability for your desired travel dates. Data last updated 3 September 2025.

Mon 3/1110:05GLA - SOU

Nonstop1h 20measyJet

Sat 8/1113:55SOU - GLA

Nonstop1h 20measyJet

Deal found 2/9£56

Sat 28/211:50GLA - SOU

Nonstop1h 20measyJet

Sat 14/313:55SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£68

Fri 27/215:50GLA - SOU

Nonstop1h 20measyJet

Sat 14/313:55SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£77

Wed 1/1007:10GLA - SOU

Nonstop1h 20measyJet

Mon 6/1011:05SOU - GLA

Nonstop1h 25measyJet

Deal found 2/9£86

Fri 5/1215:50GLA - SOU

Nonstop1h 20measyJet

Sun 7/1218:20SOU - GLA

Nonstop1h 20measyJet

Deal found 1/9£88

Mon 15/909:15GLA - SOU

Nonstop1h 20measyJet

Wed 17/909:00SOU - GLA

Nonstop1h 25measyJet

Deal found 1/9£122

Sun 5/1014:45GLA - SOU

Nonstop1h 20measyJet

Tue 7/1012:25SOU - GLA

Nonstop1h 25measyJet

Deal found 3/9£123

Thu 16/1009:35GLA - SOU

Nonstop1h 20measyJet

Thu 23/1011:25SOU - GLA

Nonstop1h 25measyJet

Deal found 1/9£124

Sat 20/906:35GLA - SOU

Nonstop1h 20measyJet

Sat 4/1008:25SOU - GLA

Nonstop1h 25measyJet

Deal found 1/9£125

Tue 16/910:25GLA - SOU

Nonstop1h 20measyJet

Wed 17/909:00SOU - GLA

Nonstop1h 25measyJet

Deal found 2/9£145

Thu 2/1009:35GLA - SOU

Nonstop1h 20measyJet

Sun 5/1016:35SOU - GLA

Nonstop1h 25measyJet

Deal found 1/9£153

Last-minute flights from Glasgow to Portsmouth
Discover last-minute flight deals from Glasgow to Portsmouth. Data last updated 3 September 2025 and is based on user searches.

Mon 15/921:50GLA - SOU

1 stop10h 25mMultiple Airlines

Wed 17/909:00SOU - GLA

Nonstop1h 25mMultiple Airlines

Deal found 1/9£112

Mon 15/909:15GLA - SOU

Nonstop1h 20measyJet

Wed 17/909:00SOU - GLA

Nonstop1h 25measyJet

Deal found 1/9£122

Thu 25/906:05GLA - SOU

1 stop8h 15measyJet

Fri 26/912:25SOU - GLA

1 stop10h 25measyJet

Deal found 1/9£109

Wed 1/1007:10GLA - SOU

Nonstop1h 20measyJet

Mon 6/1011:50SOU - GLA

1 stop9h 55measyJet

Deal found 2/9£84

Sun 5/1007:25GLA - SOU

1 stop4h 00measyJet

Tue 7/1012:25SOU - GLA

Nonstop1h 25measyJet

Deal found 3/9£97

Wed 15/1007:10GLA - SOU

Nonstop1h 20measyJet

Thu 16/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£86

Thu 16/1009:35GLA - SOU

Nonstop1h 20measyJet

Thu 23/1015:05SOU - GLA

1 stop8h 25measyJet

Deal found 1/9£100

One-way flights from Glasgow to Portsmouth
Search for one-way flight options from Glasgow to Portsmouth. Find affordable one-way fares based on user searches. Data last updated 3 September 2025.

Sat 18/1006:35GLA - SOU

Nonstop1h 20measyJet

Deal found 2/9£28

Tue 2/1207:30GLA - SOU

Nonstop1h 20measyJet

Deal found 3/9£31

Wed 15/1007:10GLA - SOU

Nonstop1h 20measyJet

Deal found 1/9£35

Wed 8/1007:10GLA - SOU

Nonstop1h 20measyJet

Deal found 1/9£48

Fri 3/1022:20GLA - SOU

1 stop16h 30measyJet

Deal found 1/9£63

Sat 13/906:35GLA - SOU

Nonstop1h 20measyJet

Deal found 1/9£66

Thu 2/1009:35GLA - SOU

Nonstop1h 20measyJet

Deal found 1/9£70

Thu 16/1009:35GLA - SOU

Nonstop1h 20measyJet

Deal found 1/9£71

Fly from

Fly to

Route

Depart

Return

Price

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Mon 3/11

10:05-11:25

Nonstop1h 20m

Southampton Eastleigh

Sat 8/11

13:55-15:15

Nonstop1h 20m

£56

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 28/2

11:50-13:10

Nonstop1h 20m

Southampton Eastleigh

Sat 14/3

13:55-15:15

Nonstop1h 20m

£68

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Fri 27/2

15:50-17:10

Nonstop1h 20m

Southampton Eastleigh

Sat 14/3

13:55-15:15

Nonstop1h 20m

£77

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 1/10

07:10-08:30

Nonstop1h 20m

Southampton Eastleigh

Mon 6/10

11:50-21:45

1 stop9h 55m

£84

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 15/10

07:10-08:30

Nonstop1h 20m

Southampton Eastleigh

Thu 16/10

15:05-23:30

1 stop8h 25m

£86

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Fri 5/12

15:50-17:10

Nonstop1h 20m

Southampton Eastleigh

Sun 7/12

18:20-19:40

Nonstop1h 20m

£88

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sun 5/10

07:25-11:25

1 stop4h 00m

Southampton Eastleigh

Tue 7/10

12:25-13:50

Nonstop1h 25m

£97

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Thu 16/10

09:35-10:55

Nonstop1h 20m

Southampton Eastleigh

Thu 23/10

15:05-23:30

1 stop8h 25m

£100

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 18/10

06:35-07:55

Nonstop1h 20m

£28

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Tue 2/12

07:30-08:50

Nonstop1h 20m

£31

Flights are sorted by cheapest return flights first.

Deals found on 2/9

Showing 1-10 of 16 results

Best time to book a flight from Glasgow to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Glasgow with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Glasgow to Portsmouth

How far ahead should I book a flight from Glasgow to Portsmouth?

To ensure you get the cheapest price possible for a flight from Glasgow to Portsmouth, you should look to book at least 67 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Glasgow to Portsmouth?

Currently, January is the cheapest month in which you can book a flight from Glasgow to Portsmouth (average of £112). Flying from Glasgow to Portsmouth in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from GLA to P0R?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Glasgow to Portsmouth as you normally would.

What is the cheapest day to fly from Glasgow to Portsmouth?

Travellers seeking maximum savings on their Glasgow to Portsmouth flight should consider departing on Tuesday at midday when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Glasgow to Portsmouth

The most flights from GG1 to P0R are scheduled on a Tuesday (54 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Portsmouth

Read reviews from past customers who have flown with KLM, easyJet, andBritish Airways from Glasgow to Portsmouth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

KLM

7.8

Good

1,382 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Gary,Sept 2025

BRS - AMS

Very good and loved being on a smaller plane with only 100 passengers max so boarding and disembarking was quick and easy

KLM

7.8

Good

1,382 reviews

KLM

7.8

Good

1,382 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Gary,Sept 2025

BRS - AMS

Very good and loved being on a smaller plane with only 100 passengers max so boarding and disembarking was quick and easy

easyJet

6.9

Okay

1,817 reviews

KLM

7.8

Good

1,382 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Gary,Sept 2025

BRS - AMS

Very good and loved being on a smaller plane with only 100 passengers max so boarding and disembarking was quick and easy

British Airways

6.7

Okay

7,345 reviews

KLM

7.8

Good

1,382 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Gary,Sept 2025

BRS - AMS

Very good and loved being on a smaller plane with only 100 passengers max so boarding and disembarking was quick and easy

Related info for your journey

How long is the flight from Glasgow to Portsmouth?
easyJet can get you from Glasgow to Portsmouth in just under 1h 20m. Your travel time will be generally consistent. There are 363 mi between Glasgow and Portsmouth. Most flights are nonstop.
What are the most reliable airlines from Glasgow to Portsmouth?
No one likes to see their flight delayed. When booking a flight from Glasgow to Portsmouth consider choosing American Airlines (84%), Iberia (83%) or Finnair (82%) as they are the most reliable in getting you off to your destination on time.
What are the cheapest flights from Glasgow to Portsmouth?
While on average a flight from Glasgow to Portsmouth is generally £1,500, our data shows the cheapest flight currently is £57. When looking at the most popular route, (Glasgow Intl - Southampton Eastleigh), you can expect to pay £56 for that flight.
Can I find deals for flights from Glasgow to Portsmouth that include hotel bookings?
Yes. In addition to deals on Glasgow to Portsmouth flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Glasgow to Portsmouth?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Glasgow to Portsmouth.
Can I find deals for business class flights from Glasgow to Portsmouth?
Yes. Cheapflights offers flight deals from Glasgow to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Glasgow to Portsmouth?
Currently, January is the cheapest month in which you can book a flight from Glasgow to Portsmouth (average of £112). Flying from Glasgow to Portsmouth in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 6 airlines flying from Glasgow to Portsmouth

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£23	Average£52	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
easyJet	Cheapest£28	Average£80	FlexibilityNo cancel fee	On-time86%	Search easyJet flights
Ryanair	Cheapest£39	Average£59	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
British Airways	Cheapest£48	Average£161	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Loganair	Cheapest£147	Average£215	FlexibilityNo cancel fee	On-time79%	Search Loganair flights
KLM	Cheapest£160	Average£276	FlexibilityNo cancel fee	On-time75%	Search KLM flights

Fly with Cheapflights

How does Cheapflights help users find flights from Glasgow to Portsmouth?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Portsmouth from Glasgow today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Glasgow to Portsmouth?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Portsmouth from Glasgow.

Can Cheapflights find flights from Glasgow to Portsmouth with no change fees?

Need flexible booking options for your flight to Portsmouth from Glasgow? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Glasgow to Portsmouth become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Portsmouth from Glasgow today and book when prices fit your budget.

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Cheap flights from Glasgow to Portsmouth from £28

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 18/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Glasgow to Portsmouth are usually found in March or February, booked 67 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Glasgow to Portsmouth

Keep the following information in mind while searching for Glasgow to Portsmouth flight deals. Data was last updated 3 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Glasgow to Portsmouth

Cheapest flights from Glasgow to PortsmouthExplore the most affordable flight options available from Glasgow to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2025.

Explore the most affordable flight options available from Glasgow to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Glasgow to Portsmouth that are best for you.

Best time to book a flight from Glasgow to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Glasgow with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Glasgow to Portsmouth

How far ahead should I book a flight from Glasgow to Portsmouth?

Use this chart to determine the optimal time to book a return flight from Glasgow to Portsmouth. Price data was last updated on 29 August 2025.

What is the cheapest month to book a flight from Glasgow to Portsmouth?

What is the cheapest time of day to fly from GLA to P0R?

Find hourly flight availability from Glasgow to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 September 2025.

What is the cheapest day to fly from Glasgow to Portsmouth?

Use this chart to determine the cheapest time to fly return from Glasgow to Portsmouth. Price data was last updated on 16 December 2024.

Weekly flight availability from Glasgow to Portsmouth

Explore weekly flight availability from Glasgow to Portsmouth. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 3 September 2025.

Reviews of airlines servicing Portsmouth

Read reviews from past customers who have flown with KLM, easyJet, andBritish Airways from Glasgow to Portsmouth. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Glasgow to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Glasgow to Portsmouth?

What are the most reliable airlines from Glasgow to Portsmouth?

What are the cheapest flights from Glasgow to Portsmouth?

Can I find deals for flights from Glasgow to Portsmouth that include hotel bookings?

How can I find direct flights from Glasgow to Portsmouth?

Can I find deals for business class flights from Glasgow to Portsmouth?

What is the cheapest month to book a flight from Glasgow to Portsmouth?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Glasgow to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from Glasgow to Portsmouth

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Glasgow to Portsmouth?

Why should you use Cheapflights to find cheap flight tickets from Glasgow to Portsmouth?

Can Cheapflights find flights from Glasgow to Portsmouth with no change fees?

Can Cheapflights notify me if prices for flights from Glasgow to Portsmouth become cheaper?

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Cheapest flights from Glasgow to Portsmouth
Explore the most affordable flight options available from Glasgow to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 September 2025.