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Cheap flights from Glasgow Intl Airport to Portugal from £25

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 13/8. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LIS
8 Jun — 15 Jun1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Glasgow Intl to Portugal

Enter your travel dates to find the best prices.

Cheapest flights from Glasgow Intl to Portugal
Explore the most affordable flight options available from Glasgow Intl to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 May 2026.

Tue 12/506:30
GLA
-
FAO
Nonstop3h 15m
Jet2
Tue 19/510:40
FAO
-
GLA
Nonstop3h 25m
Jet2
Deal found 7/5£79
Tue 2/609:10
GLA
-
OPO
1 stop14h 30m
Multiple Airlines
Tue 16/617:45
OPO
-
GLA
1 stop14h 05m
Multiple Airlines
Deal found 5/5£81
Tue 12/521:20
GLA
-
FAO
1 stop13h 20m
Multiple Airlines
Tue 19/510:40
FAO
-
GLA
Nonstop3h 25m
Multiple Airlines
Deal found 7/5£85
Mon 8/608:05
GLA
-
FAO
1 stop11h 05m
Multiple Airlines
Thu 11/609:10
FAO
-
GLA
1 stop9h 25m
Multiple Airlines
Deal found 5/5£87
Wed 13/511:55
GLA
-
FAO
1 stop10h 35m
Multiple Airlines
Wed 20/519:15
FAO
-
GLA
1 stop12h 25m
Multiple Airlines
Deal found 8/5£88
Mon 1/622:20
GLA
-
OPO
1 stop10h 40m
Multiple Airlines
Fri 12/621:30
OPO
-
GLA
1 stop11h 30m
Multiple Airlines
Deal found 6/5£90
Tue 12/506:30
GLA
-
FAO
Nonstop3h 15m
Jet2
Fri 15/510:40
FAO
-
GLA
Nonstop3h 25m
Jet2
Deal found 9/5£90
Mon 15/620:40
GLA
-
OPO
1 stop10h 40m
Multiple Airlines
Fri 19/621:30
OPO
-
GLA
1 stop11h 30m
Multiple Airlines
Deal found 8/5£93
Mon 11/522:20
GLA
-
FAO
1 stop12h 30m
Multiple Airlines
Mon 18/510:35
FAO
-
GLA
Nonstop3h 25m
Multiple Airlines
Deal found 8/5£95
Thu 7/516:20
GLA
-
FAO
Nonstop3h 20m
Multiple Airlines
Tue 12/510:40
FAO
-
GLA
Nonstop3h 25m
Multiple Airlines
Deal found 5/5£96
Wed 2/911:55
GLA
-
FAO
1 stop10h 35m
Multiple Airlines
Wed 16/906:45
FAO
-
GLA
1 stop14h 00m
Multiple Airlines
Deal found 9/5£98
Fri 15/506:25
GLA
-
OPO
Nonstop2h 45m
easyJet
Mon 18/510:10
OPO
-
GLA
Nonstop2h 40m
easyJet
Deal found 5/5£99

Find flight deals from Glasgow Intl to Portugal

Keep the following information in mind while searching for Glasgow Intl to Portugal flight deals. Data was last updated 9 May 2026.

Round-trip from

£81

One-way from

£25

Popular in

July

Cheapest in

December

Average price

£194

Good round-trip deal

£155 or less

Good one-way deal

£31 or less
2/6-16/6
  • 2/6-16/6
  • 2 total stops
  • 28h 35m total
  • Glasgow to Portugal
Search Deals
easyJet
  • easyJet
  • 13/8
  • Nonstop
  • 3h 20m total
  • Glasgow to Portugal
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£34 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
Search Deals
Price to beat on a round-trip flight from Glasgow Intl to Portugal.
Search Deals
Price to beat on a one-way flight from Glasgow Intl to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Glasgow Intl to Portugal 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 9 May 2026.
Use the filters below to find and compare flights from Glasgow Intl Airport to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Mon 1/6

22:20-09:00

1 stop10h 40m

Porto

Fri 12/6

21:30-09:00

1 stop11h 30m

£90

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Fri 5/6

06:25-09:15

Nonstop2h 50m

Porto

Thu 11/6

06:40-19:50

1 stop13h 10m

£113

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Fri 19/6

06:25-09:15

Nonstop2h 50m

Porto

Fri 26/6

07:00-23:00

1 stop16h 00m

£118

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Fri 10/7

06:25-09:15

Nonstop2h 50m

Porto

Tue 14/7

11:20-11:30

1 stop24h 10m

£119
Fastest return journey

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Fri 5/6

06:25-09:15

Nonstop2h 50m

Porto

Mon 8/6

10:10-12:50

Nonstop2h 40m

£121

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Mon 6/7

20:40-07:20

1 stop10h 40m

Porto

Wed 8/7

17:45-07:40

1 stop13h 55m

£124

GlasgowLisbon

GLA - LIS

GLALIS

Glasgow Intl

Sat 6/6

22:00-17:55

2 stops19h 55m

Lisbon Humberto Delgado

Thu 16/7

05:55-18:35

1 stop12h 40m

£125

GlasgowFaro

GLA - FAO

GLAFAO

Glasgow Intl

Wed 5/8

16:20-19:40

Nonstop3h 20m

Faro

Mon 10/8

20:45-23:55

Nonstop3h 10m

£134

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Mon 1/6

22:20-09:00

1 stop10h 40m

Porto

Mon 8/6

10:10-12:50

Nonstop2h 40m

£135

GlasgowPorto

GLA - OPO

GLAOPO

Glasgow Intl

Tue 30/6

20:40-21:40

2 stops25h 00m

Porto

Mon 6/7

13:55-08:45

2 stops18h 50m

£135

Flights are sorted by cheapest return flights first.

Deals found on 7/5

Showing 1-10 of 60 resultsSorted by cheapest first
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2
3
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6

Best time to book a flight from Glasgow Intl to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Glasgow Intl 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 Intl Airport to Portugal

How far ahead should I book a flight from Glasgow Intl Airport to Portugal?

Booking 48 days in advance of your planned departure date is, on average, the best time to get cheap flights from Glasgow Intl Airport to Portugal. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Glasgow Intl Airport to Portugal?

Currently, December is the cheapest month in which you can book a flight from Glasgow Intl Airport to Portugal (average of £15). Flying from Glasgow Intl Airport to Portugal in June is currently the most expensive (average of £83). 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 PT?

Find hourly flight availability from Glasgow Intl to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 9 May 2026.

When flying from Glasgow Intl Airport to Portugal, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 60% versus a flight at midday.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated 9 May 2026.
Get a feel of what it's like to fly with Jet2,KLM, andRyanair from Glasgow Intl Airport to Portugal by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.
Jet2
8.2
Very Good
186 reviews
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.
KLM
7.8
Good
1,513 reviews
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.
Ryanair
6.9
Okay
5,371 reviews
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.
easyJet
6.9
Okay
1,900 reviews
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.
British Airways
6.7
Okay
7,964 reviews
Jet2
8.2
Very Good
186 reviews
Check prices

Entertainment

6.2

Food

7.2

Crew

8.7

Comfort

7.7

Boarding

8.1

Overall

8.2

Reviews

1 / 18
10.0
Excellent

Irene,Feb 2026

ALC - EMA

I always fly with Jet 2...I have never had a bad flight with them. From arriving at the airport, to the checking in has been trouble free. My last flight I booked my seat, I dont normally if im travelling on my own, the plane was full so im pleased I did. The flight was smooth on take off and landing.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl to Portugal. 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 Intl Airport to Portugal?

    Departing from Glasgow Intl Airport to Portugal will take you 2h 50m. The distance from Glasgow Intl Airport to Portugal is about 1028 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Glasgow Intl Airport to Portugal one-way?

    £30 is the cheapest one-way deal found within the past few days, from easyJet. You may also be able to find cheap deals on Jet2 and KLM, with prices starting from £31 and £109, respectively.

  • What are the most popular routes from Glasgow Intl Airport to Portugal?

    Most travelers choose Glasgow Intl - Faro, Glasgow Intl - Lisbon Humberto Delgado or Glasgow Intl - Porto when deciding on the best route from Glasgow Intl Airport to Portugal.

  • What are the cheapest flights from Glasgow Intl Airport to Portugal?

    On average you can expect to pay £139 for a flight from Glasgow Intl Airport to Portugal. The cheapest flight overall is £62 while the most popular route, (Glasgow Intl - Faro) is currently priced at £95.

  • Can I find deals for flights from Glasgow Intl to Portugal that include hotel bookings?

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

  • How can I find direct flights from Glasgow Intl to Portugal?

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

  • Can I find deals for business class flights from Glasgow Intl to Portugal?

    Yes. Cheapflights offers flight deals from Glasgow Intl to Portugal 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 Intl Airport to Portugal?

    Currently, December is the cheapest month in which you can book a flight from Glasgow Intl Airport to Portugal (average of £15). Flying from Glasgow Intl Airport to Portugal in June is currently the most expensive (average of £83). 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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Alternative routes for Glasgow Intl to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
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Top 5 airlines flying from Glasgow Intl to Portugal

Discover the top 5 airlines that operate flights from Glasgow Intl to Portugal. 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 9 May 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£59Average£183FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Jet2Cheapest£82Average£292FlexibilityNo cancel feeOn-timeN/A
Search Jet2 flights
RyanairCheapest£82Average£151FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
KLMCheapest£143Average£292FlexibilityNo cancel feeOn-time75%
Search KLM flights
British AirwaysCheapest£179Average£235FlexibilityNo cancel feeOn-time70%
Search British Airways flights

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 Intl to Portugal?

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 Portugal from Glasgow Intl today with Cheapflights!

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

Millions of users choose and trust Cheapflights to book the best flight deals from Glasgow Intl to Portugal for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Need flexible booking options for your flight to Portugal from Glasgow Intl? 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 Intl to Portugal become cheaper?

Yes, Cheapflights offers price alerts on Glasgow Intl to Portugal flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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