$511+ Cheap flights from St. Louis (STL) to Iceland
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 3/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — KEF
Apr 18 — Apr 251
Round-trip
1 adult, Economy
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Best
Last-minute
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Cheapest flights from St. Louis to IcelandExplore the most affordable flight options available from St. Louis to Iceland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.
Explore the most affordable flight options available from St. Louis to Iceland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 19, 2026.
This Billigflug deal was found by Cheapflights users on 3/15. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:41 pm
STL
- KEF
2 stops11h 49m
Multiple Airlines
Wed 5/611:25 am
KEF
- STL
2 stops30h 45m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$591
This Virgin Atlantic deal was found by Cheapflights users on 3/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/156:45 am
STL
- KEF
1 stop19h 55m
Virgin Atlantic
Wed 8/268:45 am
KEF
- STL
1 stop16h 46m
Virgin Atlantic
Deal found 3/15![Virgin Atlantic logo]()
$680
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/19:21 pm
STL
- KEF
2 stops27h 39m
Multiple Airlines
Wed 6/1010:45 am
KEF
- STL
1 stop13h 28m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$687
This KLM deal was found by Cheapflights users on 3/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/121:56 pm
STL
- KEF
1 stop12h 04m
Multiple Airlines
Wed 5/2011:25 am
KEF
- STL
1 stop10h 40m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$705
This KLM deal was found by Cheapflights users on 3/16. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:22 am
STL
- KEF
1 stop15h 18m
KLM
Wed 5/208:50 am
KEF
- STL
2 stops12h 20m
KLM
Deal found 3/16![KLM logo]()
$709
This KLM deal was found by Cheapflights users on 3/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:45 pm
STL
- KEF
1 stop8h 55m
KLM
Wed 8/268:45 am
KEF
- STL
1 stop16h 46m
KLM
Deal found 3/15![KLM logo]()
$775
This KLM deal was found by Cheapflights users on 3/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:45 pm
STL
- KEF
1 stop8h 55m
Multiple Airlines
Wed 8/268:45 am
KEF
- STL
2 stops14h 17m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$779
This Billigflug deal was found by Cheapflights users on 3/17. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:42 am
STL
- KEF
2 stops16h 48m
Multiple Airlines
Sat 5/911:25 am
KEF
- STL
2 stops30h 45m
Multiple Airlines
Deal found 3/17![Multiple Airlines logo]()
$800
This Air France deal was found by Cheapflights users on 3/18. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:36 pm
STL
- KEF
1 stop9h 04m
Air France
Wed 5/2011:25 am
KEF
- STL
1 stop10h 40m
Air France
Deal found 3/18![Air France logo]()
$805
Best flights from St. Louis to IcelandDiscover carefully curated flight deals from St. Louis to Iceland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 19, 2026.
Discover carefully curated flight deals from St. Louis to Iceland that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 19, 2026.
This KLM deal was found by Cheapflights users on 3/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:22 am
STL
- KEF
1 stop15h 18m
KLM
Wed 5/208:50 am
KEF
- STL
2 stops12h 20m
KLM
Deal found 3/14![KLM logo]()
$709
This KLM deal was found by Cheapflights users on 3/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:45 pm
STL
- KEF
1 stop8h 55m
Multiple Airlines
Wed 8/268:45 am
KEF
- STL
2 stops14h 17m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$779
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:32 pm
STL
- KEF
2 stops34h 13m
United Airlines
Wed 8/2610:00 am
KEF
- STL
2 stops31h 13m
United Airlines
Deal found 3/14![United Airlines logo]()
$812
This KLM deal was found by Cheapflights users on 3/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/155:45 pm
STL
- KEF
1 stop8h 55m
KLM
Wed 8/268:45 am
KEF
- STL
1 stop16h 46m
KLM
Deal found 3/15![KLM logo]()
$775
This United Airlines deal was found by Cheapflights users on 3/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:44 am
STL
- KEF
1 stop18h 46m
United Airlines
Wed 9/309:15 am
KEF
- STL
2 stops43h 28m
United Airlines
Deal found 3/14![United Airlines logo]()
$834
Last-minute flights from St. Louis to IcelandDiscover last-minute flight deals from St. Louis to Iceland. Data last updated March 19, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Iceland. Data last updated March 19, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/38:16 pm
STL
- KEF
1 stop28h 44m
Multiple Airlines
Sun 4/124:50 pm
KEF
- STL
1 stop21h 58m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$961
This Finnair deal was found by Cheapflights users on 3/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/42:25 pm
STL
- KEF
2 stops21h 05m
Multiple Airlines
Sun 4/128:35 am
KEF
- STL
2 stops20h 11m
Multiple Airlines
Deal found 3/14![Multiple Airlines logo]()
$1,195
This Kiwi.com deal was found by Cheapflights users on 3/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/77:00 am
STL
- KEF
1 stop21h 25m
Multiple Airlines
Tue 4/147:45 pm
KEF
- STL
1 stop24h 06m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$1,125
This Virgin Atlantic deal was found by Cheapflights users on 3/15. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/712:04 pm
STL
- KEF
2 stops16h 26m
Virgin Atlantic
Tue 4/1411:25 am
KEF
- STL
2 stops16h 49m
Virgin Atlantic
Deal found 3/15![Virgin Atlantic logo]()
$1,183
This Mytrip deal was found by Cheapflights users on 3/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/144:05 pm
STL
- KEF
3 stops21h 30m
Multiple Airlines
Tue 4/217:25 pm
KEF
- STL
2 stops23h 00m
Multiple Airlines
Deal found 3/16![Multiple Airlines logo]()
$1,021
This Ovago deal was found by Cheapflights users on 3/16. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/142:33 pm
STL
- KEF
2 stops38h 07m
British Airways
Tue 4/2110:50 am
KEF
- STL
1 stop13h 40m
British Airways
Deal found 3/16![British Airways logo]()
$1,121
This Billigflug deal was found by Cheapflights users on 3/15. 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 Billigflug is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/294:41 pm
STL
- KEF
2 stops11h 49m
Multiple Airlines
Wed 5/611:25 am
KEF
- STL
2 stops30h 45m
Multiple Airlines
Deal found 3/15![Multiple Airlines logo]()
$591
This Delta deal was found by Cheapflights users on 3/16. 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 4/301:02 pm
STL
- KEF
2 stops15h 28m
Delta
Thu 5/711:25 am
KEF
- STL
1 stop10h 40m
Delta
Deal found 3/16![Delta logo]()
$879
One-way flights from St. Louis to IcelandSearch for one-way flight options from St. Louis to Iceland. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
Search for one-way flight options from St. Louis to Iceland. Find affordable one-way fares based on user searches. Data last updated March 19, 2026.
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/238:12 pm
STL
- KEF
3 stops40h 03m
Multiple Airlines
Deal found 3/18![Multiple Airlines logo]()
$511
Find flight deals from St. Louis to Iceland
Keep the following information in mind while searching for St. Louis to Iceland flight deals. Data was last updated March 19, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $591 (Billigflug) |
One-way from | $511 (Kiwi.com) |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Iceland 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 March 19, 2026.
Use the filters below to find and compare flights from St. Louis to Iceland that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Tue 5/12
11:22 am-7:40 am
1 stop15h 18m
Reykjavik Keflavik Intl
Wed 5/20
8:50 am-4:10 pm
2 stops12h 20m
$709
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Sat 8/15
5:45 pm-7:40 am
1 stop8h 55m
Reykjavik Keflavik Intl
Wed 8/26
8:45 am-8:31 pm
1 stop16h 46m
$775
Quickest round-trip
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Sat 8/15
5:45 pm-7:40 am
1 stop8h 55m
Reykjavik Keflavik Intl
Wed 8/26
8:45 am-6:02 pm
2 stops14h 17m
$779
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Sat 8/15
5:32 pm-8:45 am
2 stops34h 13m
Reykjavik Keflavik Intl
Wed 8/26
10:00 am-12:13 pm
2 stops31h 13m
$812
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Tue 9/1
8:44 am-8:30 am
1 stop18h 46m
Reykjavik Keflavik Intl
Wed 9/30
9:15 am-11:43 pm
2 stops43h 28m
$834
Cheapest one-way
Quickest one-way
St. LouisReykjavik
STL - KEF
STLKEF
Lambert-St Louis
Mon 3/23
8:12 pm-5:15 pm
3 stops40h 03m
$511
Sorted by cheapest first
Best time to book a flight from St. Louis to Iceland
Have a flexible travel schedule? Discover the best time to fly to Iceland from St. Louis with our price prediction graph.
STL-KEF
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 St. Louis to Iceland
STL-IS0
STL-KEF
No data available for this route at this time. Please check back soon.
Reviews of airlines servicing Iceland
Get insights into the airlines that provide service to Iceland. 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 Iceland. Reviews last updated March 19, 2026.
See what other customers who have flown with Delta,KLM, andUnited Airlines from St. Louis to Iceland have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Boarding
8.1
Overall
7.9
Comfort
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
6.0
GoodJim,Nov 2025
AVL - ATL
Related info for your journey
Find useful and relevant information for your journey from St. Louis to Iceland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to Iceland
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Iceland by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from St. Louis to Iceland, based on your preferred cabin class, be it economy, premium economy, business, or first class.
St. Louis and Iceland flights
Browse other St. Louis and Iceland flight options. Last updated on March 19, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from St. Louis to Iceland
Discover the top 4 airlines that operate flights from St. Louis to Iceland. 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 2,558,603 searches. Data last updated March 19, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$592 | Average$1,065 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$604 | Average$800 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$636 | Average$987 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$784 | Average$1,147 | FlexibilityNo cancel fee | On-time75% |