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Cheap flights from Portsmouth to Boise from £757

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BOI
23 Jul — 30 Jul1
1 adult

Cheap flight deals from Portsmouth to Boise

Keep the following information in mind while searching for Portsmouth to Boise flight deals. Data was last updated 18 July 2025.

Round-trip from

£757

Popular in

July

Cheapest in

November

Average price

£934
Virgin Atlantic
  • Virgin Atlantic
  • 1/9-8/9
  • 4 total stops
  • 100h 00m total
  • Portsmouth to Boise
Search Deals
Highest demand for flights based on searches. 17% potential increase in price (£110 potential increase over avg. return price).
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Cheapest flight prices on average. 3% potential price decrease (£16 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2025
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Find flight deals from Portsmouth to Boise

Cheapest flights from Portsmouth to Boise
Explore the most affordable flight options available from Portsmouth to Boise. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 July 2025.

Mon 1/909:20SOU - BOI
2 stops42h 00mVirgin Atlantic
Mon 8/915:45BOI - SOU
2 stops58h 00mVirgin Atlantic
Deal found 18/7£757
Mon 1/920:00SOU - BOI
3 stops33h 54mMultiple Airlines
Mon 8/905:00BOI - SOU
3 stops31h 30mMultiple Airlines
Deal found 18/7£1,359

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Boise 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 18 July 2025.
Use the filters below to find and compare flights from Portsmouth to Boise that are best for you.

Fly from

Portsmouth

Fly to

Boise

Route

Depart

Return

Price

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 1/9

09:20-20:20

2 stops42h 00m

Boise Air Term. Gowen Fld

Mon 8/9

15:45-08:45

2 stops58h 00m

£757

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 1/9

20:00-22:54

3 stops33h 54m

Boise Air Term. Gowen Fld

Mon 8/9

05:00-19:30

3 stops31h 30m

£1,359

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Best time to book a flight from Portsmouth to Boise

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

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

Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boise (average of £754). Flying from Portsmouth to Boise in August is currently the most expensive (average of £1,152). 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 P0R to BOI?

Find hourly flight availability from Portsmouth to Boise. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 July 2025.

When flying from Portsmouth to Boise, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Boise

Get insights into the airlines that provide service to Boise. 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 Boise. Reviews last updated 18 July 2025.
Read through reviews of airlines operating flights from Portsmouth to Boise, such as Virgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.4
Good
655 reviews
Check prices

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row
Virgin Atlantic
7.4
Good
655 reviews
Virgin Atlantic
7.4
Good
655 reviews
Check prices

Food

6.9

Crew

8.1

Comfort

7.3

Entertainment

7.5

Boarding

7.7

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Jorge,Jun 2025

SFO - LHR

Exceptional, the flight attendant were amazing. My economy delight seat was very comfortable, and I was fortunate enough to have an empty row

Related info for your journey

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

  • What airport do you fly into for flights to Boise from Portsmouth?

    Boise Air Term. Gowen Fld (BOI) is the airport you will fly into if you book a flight from Portsmouth to Boise. You should not have trouble finding flights to Air Term. Gowen Fld from Portsmouth; the airport handles an average of 0 inbound flights from Portsmouth per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the Boise airport from Portsmouth. It is only a 3.3 mi journey from Air Term. Gowen Fld (BOI) to Boise’s city center.

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

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

  • How can I find direct flights from Portsmouth to Boise?

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

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

    Yes. Cheapflights offers flight deals from Portsmouth to Boise 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 Portsmouth to Boise?

    Currently, October is the cheapest month in which you can book a flight from Portsmouth to Boise (average of £754). Flying from Portsmouth to Boise in August is currently the most expensive (average of £1,152). 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

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Top 6 airlines flying from Portsmouth to Boise

Discover the top 6 airlines that operate flights from Portsmouth to Boise. 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 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
KLMCheapest£531Average£631FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£536Average£586FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£539Average£649FlexibilityNo cancel feeOn-time76%
Search Finnair flights
United AirlinesCheapest£541Average£649FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Virgin AtlanticCheapest£604Average£758FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
British AirwaysCheapest£670Average£858FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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

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

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