$1,141+ 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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
SOU — BOI
Dec 2 — Dec 91
1 adult, Economy
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Best flights from Southampton to IdahoDiscover carefully curated flight deals from Southampton to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 2, 2025.
Discover carefully curated flight deals from Southampton to Idaho that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 2, 2025.
This Delta deal was found by Cheapflights users on 10/31. 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 3/68:40 amSOU - BOI
2 stops22h 02mDelta
Mon 3/93:00 pmBOI - SOU
2 stops44h 00mDelta
Deal found 10/31![Delta logo]()
$1,141
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 November 2, 2025.
Round-trip from | $1,141 (Delta) |
|---|---|
Popular in | July |
Cheapest in | September |
Average price | $860 |
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 November 2, 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
Fri 3/6
8:40 am-11:42 pm
2 stops22h 02m
Boise Air Term. Gowen Fld
Mon 3/9
3:00 pm-5:00 pm
2 stops44h 00m
$1,141
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, May is the cheapest month in which you can book a flight from Southampton to Idaho (average of $723). Flying from Southampton to Idaho in July is currently the most expensive (average of $905). 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.