HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Idaho

$923+ Cheap flights from Southampton (SOU) to Idaho

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BOI
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Southampton to Idaho with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 September 15, 2025.

Round-trip from

$963
(Delta)

Popular in

July

Cheapest in

February

Average price

$818
From Southampton Eastleigh to Idaho
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($152 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT 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 September 15, 2025.

This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:20 amSOU - BOI
2 stops31h 50mDelta
Sun 10/1211:39 pmBOI - SOU
2 stops26h 06mDelta
Deal found 9/14$923
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 amSOU - BOI
2 stops18h 00mDelta
Sun 10/1211:39 pmBOI - SOU
2 stops26h 06mDelta
Deal found 9/14$963
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:20 amSOU - BOI
2 stops35h 55mDelta
Sun 10/1211:39 pmBOI - SOU
2 stops26h 06mDelta
Deal found 9/14$969
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/259:20 amSOU - BOI
2 stops18h 00mDelta
Fri 10/107:45 pmBOI - SOU
2 stops39h 05mDelta
Deal found 9/14$1,004
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:20 amSOU - BOI
2 stops35h 55mDelta
Sat 10/113:00 pmBOI - SOU
2 stops19h 50mDelta
Deal found 9/14$1,010
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:25 pmSOU - BOI
2 stops36h 34mDelta
Mon 10/135:42 amBOI - SOU
2 stops20h 03mDelta
Deal found 9/14$1,028
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/286:25 pmSOU - BOI
2 stops28h 15mDelta
Fri 10/107:45 pmBOI - SOU
2 stops39h 05mDelta
Deal found 9/14$1,069
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:35 pmSOU - BOI
2 stops37h 24mDelta
Tue 10/143:00 pmBOI - SOU
2 stops19h 00mDelta
Deal found 9/14$1,087
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/295:35 pmSOU - BOI
2 stops37h 24mDelta
Sat 10/113:00 pmBOI - SOU
2 stops19h 50mDelta
Deal found 9/14$1,128
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/309:20 amSOU - BOI
2 stops35h 55mDelta
Wed 10/83:00 pmBOI - SOU
2 stops19h 00mDelta
Deal found 9/14$1,133
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:20 amSOU - BOI
2 stops21h 55mDelta
Wed 10/85:55 pmBOI - SOU
2 stops16h 05mDelta
Deal found 9/14$1,189
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/269:20 amSOU - BOI
2 stops21h 39mDelta
Mon 10/135:42 amBOI - SOU
2 stops20h 03mDelta
Deal found 9/14$1,229

Cheapflights Fare Finder

 
Customize 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 2,558,603 searches. Data last updated September 15, 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

Thu 9/25

9:20 am-8:20 pm

2 stops18h 00m

Boise Air Term. Gowen Fld

Sun 10/12

11:39 pm-8:45 am

2 stops26h 06m

$963

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Thu 9/25

9:20 am-8:20 pm

2 stops18h 00m

Boise Air Term. Gowen Fld

Tue 10/14

3:00 pm-5:00 pm

2 stops19h 00m

$963

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Tue 9/30

9:20 am-2:15 pm

2 stops35h 55m

Boise Air Term. Gowen Fld

Mon 10/13

5:42 am-8:45 am

2 stops20h 03m

$969

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Tue 9/30

9:20 am-2:15 pm

2 stops35h 55m

Boise Air Term. Gowen Fld

Tue 10/14

3:00 pm-5:00 pm

2 stops19h 00m

$969

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Tue 9/30

9:20 am-2:15 pm

2 stops35h 55m

Boise Air Term. Gowen Fld

Sun 10/12

11:39 pm-8:45 am

2 stops26h 06m

$969

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Thu 9/25

9:20 am-8:20 pm

2 stops18h 00m

Boise Air Term. Gowen Fld

Sat 10/11

3:00 pm-5:50 pm

2 stops19h 50m

$1,004

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Thu 9/25

9:20 am-8:20 pm

2 stops18h 00m

Boise Air Term. Gowen Fld

Fri 10/10

7:45 pm-5:50 pm

2 stops39h 05m

$1,004

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 9/28

6:25 pm-11:59 pm

2 stops36h 34m

Boise Air Term. Gowen Fld

Sun 10/12

5:42 am-8:45 am

2 stops20h 03m

$1,069

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 9/28

6:25 pm-3:40 pm

2 stops28h 15m

Boise Air Term. Gowen Fld

Fri 10/10

7:45 pm-5:50 pm

2 stops39h 05m

$1,069

SouthamptonBoise

SOU - BOI

SOUBOI

Southampton Eastleigh

Sun 9/28

6:25 pm-11:59 pm

2 stops36h 34m

Boise Air Term. Gowen Fld

Sat 10/11

3:00 pm-5:50 pm

2 stops19h 50m

$1,069

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

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 round-trip 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 $314). Flying from Southampton to Idaho in June is currently the most expensive (average of $398). 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?

    For a flight from Southampton to Idaho, you will be flying from Eastleigh. Southampton Eastleigh (SOU) is just 3.5 mi from the center of the city.

  • How long is the flight from Southampton to Idaho?

    Delta can get you from Southampton to Idaho in just under 18h. Your travel time can differ by up to . Southampton and Idaho are separated by 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 vacation 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 $314). Flying from Southampton to Idaho in June is currently the most expensive (average of $398). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Southampton to Idaho

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
Gatwick to LaGuardia flights
London City to Newark flights
Stansted to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
Heathrow to Boston flights
Heathrow to Miami flights
Heathrow to Los Angeles flights
Stansted to Newark flights
Heathrow to Orlando flights
Luton to Newark flights
Manchester to John F Kennedy Intl flights
Heathrow to San Francisco flights
Heathrow to Dulles Intl flights
Heathrow to Las Vegas flights
Heathrow to O'Hare Intl flights
Heathrow to Baltimore flights
Heathrow to Dallas/Fort Worth flights
Gatwick to Orlando flights
Heathrow to Seattle flights
Manchester to Orlando flights
London City to Boston flights
Heathrow to Tampa flights
Gatwick to Miami flights
London City to Miami flights
Heathrow to Atlanta flights
Manchester to Newark flights
Heathrow to Hobby flights
Gatwick to Boston flights
London City to Los Angeles flights
Edinburgh to Newark flights
Manchester to LaGuardia flights
Gatwick to Los Angeles flights
Gatwick to Dulles Intl flights
Heathrow to Reagan-National flights
Gatwick to San Francisco flights
Heathrow to George Bush Intcntl flights
Gatwick to Las Vegas flights
Stansted to Miami flights
London City to Dulles Intl flights
Heathrow to Denver flights
London City to San Francisco flights
Heathrow to Austin flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.