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Cheap flights from Glasgow Intl Airport to Portsmouth 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 14/5. Fares are subject to change and may not be available on all flights or dates of travel.
GLA — LHR
28 Apr — 5 May1
1 adult

Cheapflights Tip: The best prices from Glasgow Intl to Portsmouth are usually found in March or February, booked 75 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday

Cheap flight deals from Glasgow Intl to Portsmouth

Keep the following information in mind while searching for Glasgow Intl to Portsmouth flight deals. Data was last updated 23 April 2025.

Round-trip from

£49

One-way from

£25

Popular in

July

Cheapest in

March

Average price

£110
easyJet
  • easyJet
  • 4/6-7/6
  • Nonstop
  • 2h 45m total
  • Glasgow to Portsmouth
Search Deals
easyJet
  • easyJet
  • 14/5
  • Nonstop
  • 1h 20m total
  • Glasgow to Portsmouth
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Glasgow Intl to Portsmouth

Cheapest flights from Glasgow Intl to Portsmouth
Explore the most affordable flight options available from Glasgow Intl to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 23 April 2025.

Wed 7/507:10GLA - SOU
Nonstop1h 20measyJet
Wed 14/509:00SOU - GLA
Nonstop1h 25measyJet
Deal found 23/4£58
Wed 4/607:10GLA - SOU
Nonstop1h 20mMultiple Airlines
Wed 11/609:10SOU - GLA
1 stop6h 15mMultiple Airlines
Deal found 22/4£97
Tue 29/413:45GLA - SOU
1 stop18h 40mAer Lingus
Tue 6/508:55SOU - GLA
1 stop10h 35mAer Lingus
Deal found 22/4£159
Fri 3/1006:00GLA - SOU
1 stop11h 00mKLM
Thu 16/1017:35SOU - GLA
1 stop5h 35mKLM
Deal found 22/4£215
Fri 3/1020:25GLA - SOU
2 stops15h 30mBritish Airways
Thu 16/1016:45SOU - GLA
2 stops6h 30mBritish Airways
Deal found 22/4£488

Cheapflights Fare Finder

Customise your flight search to find flights from Glasgow Intl 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 23 April 2025.
Use the filters below to find and compare flights from Glasgow Intl Airport to Portsmouth that are best for you.

Fly from

Glasgow Intl

Fly to

Portsmouth

Route

Depart

Return

Price

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 7/5

07:10-08:30

Nonstop1h 20m

Southampton Eastleigh

Wed 14/5

09:00-10:25

Nonstop1h 25m

£58

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 4/6

07:10-08:30

Nonstop1h 20m

Southampton Eastleigh

Wed 11/6

09:10-15:25

1 stop6h 15m

£97

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Fri 3/10

06:00-17:00

1 stop11h 00m

Southampton Eastleigh

Thu 16/10

17:35-23:10

1 stop5h 35m

£215

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 30/8

13:45-19:15

1 stop5h 30m

Southampton Eastleigh

Sat 6/9

08:55-16:00

1 stop7h 05m

£336

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Fri 3/10

20:25-11:55

2 stops15h 30m

Southampton Eastleigh

Thu 16/10

16:45-23:15

2 stops6h 30m

£488

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 14/5

07:10-08:30

Nonstop1h 20m

£25

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 14/5

08:25-19:30

1 stop11h 05m

£73

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Wed 4/6

17:20-08:40

1 stop15h 20m

£84

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Sat 13/9

19:45-16:15

2 stops20h 30m

£277

GlasgowSouthampton

GLA - SOU

GLASOU

Glasgow Intl

Tue 13/5

16:55-08:45

1 stop15h 50m

£295

Flights are sorted by cheapest return flights first.

Deals found on 22/4

Showing 1-10 of 11 results
1
2

Best time to book a flight from Glasgow Intl to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth 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 Portsmouth

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

Use this chart to determine the optimal time to book a return flight from Glasgow Intl to Portsmouth. Price data was last updated on 18 April 2025.

The best time to book flights from Glasgow Intl Airport to Portsmouth is 75 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Portsmouth (average of £112). Flying from Glasgow Intl Airport 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 Intl 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 23 April 2025.

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

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

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

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

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

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.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

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).

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 23 April 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus and easyJet from Glasgow to Portsmouth by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,331 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Aer Lingus
7.0
Good
1,067 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
easyJet
6.9
Okay
1,797 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,799 reviews
KLM
7.8
Good
1,331 reviews
Check prices

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Crew

8.4

Comfort

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

Related info for your journey

Find useful and relevant information for your journey from Glasgow Intl 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 Intl Airport to Portsmouth one-way?

    To fly one-way, consider booking your trip with easyJet, which is currently one of the cheapest options available, starting at £25. Aer Lingus flights start at £84 while deals on British Airways start at £277 one-way.

  • What are the most reliable airlines from Glasgow Intl Airport to Portsmouth?

    The top 3 most reliable airlines when flying from Glasgow Intl Airport to Portsmouth are Japan Airlines (89%), American Airlines (89%) and Qatar Airways (89%).

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

    On average you can expect to pay £1,547 for a flight from Glasgow Intl Airport to Portsmouth. The cheapest flight overall is £43 while the most popular route, (Glasgow Intl - Southampton Eastleigh) is currently priced at £49.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Glasgow Intl Airport to Portsmouth (average of £112). Flying from Glasgow Intl Airport 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 4 airlines flying from Glasgow Intl to Portsmouth

Discover the top 4 airlines that operate flights from Glasgow Intl 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 23 April 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£34Average£98FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£63Average£131FlexibilityNo cancel feeOn-time70%
Search British Airways flights
LoganairCheapest£105Average£175FlexibilityNo cancel feeOn-time79%
Search Loganair flights
KLMCheapest£196Average£255FlexibilityNo cancel feeOn-time75%
Search KLM flights

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Glasgow Intl to Portsmouth flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Glasgow Intl to Portsmouth 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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