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Cheap flights from Glasgow to Portsmouth from £27

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 16/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
20 Jul — 27 Jul1
1 adult

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 15 July 2025.

Round-trip from

£45

One-way from

£27

Popular in

July

Cheapest in

March

Average price

£160
easyJet
  • easyJet
  • 16/8-31/8
  • Nonstop
  • 2h 45m total
  • Glasgow to Portsmouth
Search Deals
easyJet
  • easyJet
  • 16/8
  • Nonstop
  • 1h 20m total
  • Glasgow to Portsmouth
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£16 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 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 15 July 2025.

Sat 16/806:35GLA - SOU
Nonstop1h 20measyJet
Sun 31/821:30SOU - GLA
Nonstop1h 25measyJet
Deal found 13/7£45
Wed 3/907:10GLA - SOU
Nonstop1h 20mMultiple Airlines
Tue 9/916:35SOU - GLA
1 stop7h 20mMultiple Airlines
Deal found 14/7£97

Cheapflights Fare Finder

Customise your flight search to find flights from Glasgow to Portsmouth that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 July 2025.
Use the filters below to find and compare flights from Glasgow to Portsmouth that are best for you.

Fly from

Glasgow

Fly to

Portsmouth

Route

Depart

Return

Price

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 16/8

06:35-07:55

Nonstop1h 20m

Southampton Eastleigh

Sun 31/8

21:30-22:55

Nonstop1h 25m

£45

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 3/9

07:10-08:30

Nonstop1h 20m

Southampton Eastleigh

Tue 9/9

16:35-23:55

1 stop7h 20m

£97

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 16/8

06:35-07:55

Nonstop1h 20m

£27

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 10/9

12:00-19:30

1 stop7h 30m

£74

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Tue 19/8

21:50-08:25

1 stop10h 35m

£84

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 13/9

21:15-16:05

2 stops18h 50m

£218

Flights are sorted by cheapest return flights first.

Deals found on 14/7

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?

Use this chart to determine the optimal time to book a return flight from Glasgow to Portsmouth. Price data was last updated on 11 July 2025.

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?

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 15 July 2025.

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?

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

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 afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 15 July 2025.

The most flights from GG1 to P0R are scheduled on a Monday (52 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (7 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Portsmouth. Reviews last updated 15 July 2025.
Read reviews from past customers who have flown with Aer Lingus, 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.
Aer Lingus
7.1
Good
1,165 reviews
Check prices

Boarding

7.3

Overall

7.1

Entertainment

6.8

Comfort

7.0

Crew

8.0

Food

6.4

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
Aer Lingus
7.1
Good
1,165 reviews
Aer Lingus
7.1
Good
1,165 reviews
Check prices

Boarding

7.3

Overall

7.1

Entertainment

6.8

Comfort

7.0

Crew

8.0

Food

6.4

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
easyJet
6.9
Okay
1,818 reviews
Aer Lingus
7.1
Good
1,165 reviews
Check prices

Boarding

7.3

Overall

7.1

Entertainment

6.8

Comfort

7.0

Crew

8.0

Food

6.4

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.
British Airways
6.6
Okay
7,134 reviews
Aer Lingus
7.1
Good
1,165 reviews
Check prices

Boarding

7.3

Overall

7.1

Entertainment

6.8

Comfort

7.0

Crew

8.0

Food

6.4

Reviews

1 / 20
6.0
Good

Tim Hunter,May 2025

LHR - DUB

In the economy section one of the bathrooms was reserved for first class which made for very long lines in for the bathrooms. The temperature for the flight was very cold. I ended up catching a mild cold on the way home. No blankets were handed out / offered. The food service was OK but no napkins were given with the meals -- very weird. The crew as OK but definitely not nice and welcoming.

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.

  • What are the cheapest airlines to fly from Glasgow to Portsmouth one-way?

    £27 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on Aer Lingus and British Airways, with prices starting from £74 and £218, respectively.

  • 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 Iberia (89%), Royal Air Maroc (89%) or Malaysia Airlines (88%) 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 £1,504, our data shows the cheapest flight currently is £46. When looking at the most popular route, (Glasgow Intl - Southampton Eastleigh), you can expect to pay £45 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

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Top 6 airlines flying from Glasgow to Portsmouth

Discover the top 6 airlines that operate flights from Glasgow to Portsmouth. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 July 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£24Average£56FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£27Average£51FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
easyJetCheapest£29Average£83FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£48Average£153FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£146Average£194FlexibilityNo cancel feeOn-time79%
Search Loganair flights
KLMCheapest£160Average£286FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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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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