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Cheap flights from Southampton to Idaho from £677

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/9. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BOI
17 Oct — 24 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Southampton to Idaho

Keep the following information in mind while searching for Southampton to Idaho flight deals. Data was last updated 17 September 2025.

Round-trip from

£678

Popular in

July

Cheapest in

February

Average price

£600
Delta
  • Delta
  • 8/10-16/10
  • 4 total stops
  • 37h 56m total
  • Southampton to Idaho
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£81 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Southampton to Idaho

Cheapest flights from Southampton to Idaho
Explore the most affordable flight options available from Southampton to Idaho. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 September 2025.

Wed 24/909:20SOU - BOI
2 stops31h 50mDelta
Sun 12/1023:39BOI - SOU
2 stops26h 06mDelta
Deal found 14/9£677
Sun 2/1118:05SOU - BOI
2 stops29h 01mDelta
Mon 10/1112:58BOI - SOU
2 stops21h 02mDelta
Deal found 15/9£678
Thu 25/909:20SOU - BOI
2 stops18h 00mDelta
Sun 12/1023:39BOI - SOU
2 stops26h 06mDelta
Deal found 14/9£706
Wed 29/1017:30SOU - BOI
2 stops29h 43mDelta
Wed 12/1105:35BOI - SOU
2 stops19h 45mDelta
Deal found 16/9£708
Tue 30/909:20SOU - BOI
2 stops35h 55mDelta
Mon 13/1005:42BOI - SOU
2 stops20h 03mDelta
Deal found 14/9£710
Thu 25/909:20SOU - BOI
2 stops18h 00mDelta
Fri 10/1019:45BOI - SOU
2 stops39h 05mDelta
Deal found 14/9£736
Wed 29/1017:30SOU - BOI
2 stops36h 24mDelta
Fri 14/1105:35BOI - SOU
2 stops28h 25mDelta
Deal found 16/9£738
Tue 30/909:20SOU - BOI
2 stops35h 55mDelta
Sat 11/1015:00BOI - SOU
2 stops19h 50mDelta
Deal found 14/9£741
Sun 5/1018:25SOU - BOI
2 stops28h 41mDelta
Fri 17/1014:00BOI - SOU
2 stops35h 45mDelta
Deal found 15/9£741
Sun 28/918:25SOU - BOI
2 stops36h 34mDelta
Mon 13/1005:42BOI - SOU
2 stops20h 03mDelta
Deal found 14/9£754
Tue 28/1008:40SOU - BOI
2 stops33h 49mDelta
Mon 10/1113:49BOI - SOU
2 stops20h 11mDelta
Deal found 15/9£755
Sun 12/1018:25SOU - BOI
2 stops36h 29mDelta
Mon 3/1116:46BOI - SOU
2 stops56h 34mDelta
Deal found 16/9£768

Cheapflights Fare Finder

 
Customise your flight search to find flights from Southampton to Idaho 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 17 September 2025.
Use the filters below to find and compare flights from Southampton to Idaho that are best for you.

Fly from

Southampton

Fly to

Idaho

Route

Depart

Return

Price

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 28/9

18:25-23:59

2 stops36h 34m

Boise Air Term. Gowen Fld

Wed 8/10

05:42-08:45

2 stops20h 03m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 3/11

18:05-18:51

2 stops31h 46m

Boise Air Term. Gowen Fld

Mon 10/11

09:00-17:00

2 stops25h 00m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 28/9

18:25-20:20

2 stops32h 55m

Boise Air Term. Gowen Fld

Sun 5/10

23:35-17:00

2 stops34h 25m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Wed 8/10

09:20-20:16

2 stops17h 56m

Boise Air Term. Gowen Fld

Sun 12/10

19:45-08:45

2 stops54h 00m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 5/10

18:25-16:06

2 stops28h 41m

Boise Air Term. Gowen Fld

Sun 12/10

19:45-08:45

2 stops54h 00m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 6/10

17:35-16:06

2 stops29h 31m

Boise Air Term. Gowen Fld

Sun 12/10

19:45-08:45

2 stops54h 00m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 5/10

18:25-20:16

2 stops32h 51m

Boise Air Term. Gowen Fld

Thu 16/10

14:00-17:00

2 stops20h 00m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Wed 8/10

09:20-00:08

2 stops21h 48m

Boise Air Term. Gowen Fld

Mon 13/10

05:42-08:45

2 stops20h 03m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 3/11

08:40-12:29

2 stops34h 49m

Boise Air Term. Gowen Fld

Wed 12/11

09:00-17:25

2 stops25h 25m

£678

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Mon 6/10

17:35-18:51

2 stops32h 16m

Boise Air Term. Gowen Fld

Tue 14/10

15:00-17:00

2 stops19h 00m

£678

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 12 results
1
2

Best time to book a flight from Southampton to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Southampton 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 Southampton to Idaho

What is the cheapest month to book a flight from Southampton to Idaho?

Currently, October is the cheapest month in which you can book a flight from Southampton to Idaho (average of £754). Flying from Southampton to Idaho 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.

Related info for your journey

Find useful and relevant information for your journey from Southampton to Idaho. 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 from for flights from Southampton to Idaho?

    Southampton Eastleigh (SOU) is the airport you will fly out of if you book a flight from Southampton to Idaho. It is only a 3.5 mi journey to Eastleigh (SOU) from Southampton’s city center.

  • How long is the flight from Southampton to Idaho?

    Delta can get you from Southampton to Idaho in just under 36h 34m. Your travel time can differ by up to . Airlines will cover a distance of 4828 mi.

  • Can I find deals for flights from Southampton to Idaho that include hotel bookings?

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

  • How can I find direct flights from Southampton to Idaho?

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

  • Can I find deals for business class flights from Southampton to Idaho?

    Yes. Cheapflights offers flight deals from Southampton to Idaho 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 Southampton to Idaho?

    Currently, October is the cheapest month in which you can book a flight from Southampton to Idaho (average of £754). Flying from Southampton to Idaho 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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