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STL - KEF

Find cheap flights from St. Louis to Reykjavik from $354

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Reykjavik departing on 7/10. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 6/12
Wed 6/19

Search hundreds of travel sites at once for deals on flights to Reykjavik

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Reykjavik, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Reykjavik, as well as popular online travel agencies
In the last 7 days travelers have searched 41,771,603 times on KAYAK, and here is why:

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from St. Louis to Reykjavik (STL-KEF)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Reykjavik that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
3:30 pm - 7:00 amSTL-KEF
10h 30m1 stop
9:30 am - 2:29 pmKEF-STL
9h 59m1 stop
$601Delta
Find Deal
Tue, Aug 13 - Wed, Aug 28
6:00 am - 6:20 amSTL-KEF
19h 20m2 stops
8:50 am - 11:39 pmKEF-STL
19h 49m2 stops
$605Delta
Find Deal
Tue, Aug 13 - Wed, Aug 28
5:20 pm - 7:00 amSTL-KEF
32h 40m3 stops
10:00 am - 8:00 pmKEF-STL
39h 00m2 stops
Sat, Sep 21 - Sun, Sep 29
5:20 pm - 7:00 amSTL-KEF
32h 40m3 stops
10:00 am - 3:20 pmKEF-STL
10h 20m1 stop
Sat, Sep 21 - Sun, Sep 29
5:20 pm - 8:35 amSTL-KEF
34h 15m2 stops
10:00 am - 3:20 pmKEF-STL
10h 20m1 stop
$681Air Canada
Find Deal
Sat, Sep 21 - Sun, Sep 29
10:19 am - 8:30 amSTL-KEF
17h 11m1 stop
10:00 am - 3:21 pmKEF-STL
10h 21m1 stop
$792United Airlines
Find Deal
Sun, Jul 14 - Sun, Jul 21
11:25 am - 8:30 amSTL-KEF
16h 05m1 stop
12:00 pm - 9:37 pmKEF-STL
14h 37m1 stop
$796United Airlines
Find Deal
Thu, Jul 11 - Thu, Jul 18
2:10 pm - 6:20 amSTL-KEF
11h 10m1 stop
9:30 am - 5:04 pmKEF-STL
12h 34m1 stop
$816Air France
Find Deal
Thu, Jul 11 - Thu, Jul 18
12:00 pm - 8:35 amSTL-KEF
39h 35m2 stops
10:00 am - 3:21 pmKEF-STL
10h 21m1 stop
$833Air Canada
Find Deal
Sat, Aug 3 - Sun, Aug 11
11:25 am - 6:20 amSTL-KEF
13h 55m1 stop
8:50 am - 5:20 pmKEF-STL
13h 30m1 stop
$5,153Air France
Find Deal
Sun, Jun 9 - Mon, Jun 10

Good to know

Low season

September

High season

September

Cheapest flight

$354
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly and prices are also 32% lower on average.
Flight from St. Louis to Reykjavik

When to book flights from St. Louis to Reykjavik

Are your dates flexible? Find out the best times to travel from St. Louis to Reykjavik based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking St. Louis to Reykjavik flights

  • What is the cheapest flight from St. Louis to Reykjavik Keflavik Intl Airport?

    In the last 3 days, the lowest price for a flight from St. Louis to Reykjavik Keflavik Intl Airport was $354 for a one-way ticket and $601 for a round-trip.

  • Do I need a passport to fly between St. Louis and Reykjavik?

    Yes, you’ll need a passport to travel to Reykjavik from St. Louis.

  • Which airports will I be using when flying from St. Louis to Reykjavik?

    On your way to Reykjavik, you’ll fly out from Lambert-St Louis. You’ll be landing at Reykjavik Keflavik Intl.

  • Which aircraft models fly most regularly from St. Louis to Reykjavik?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from St. Louis to Reykjavik?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between St. Louis and Reykjavik, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from St. Louis to Reykjavik, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Reykjavik are Delta and United Airlines. With an average price for the route of $978 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,176 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Reykjavik?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Reykjavik.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Reykjavik?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Reykjavik from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Reykjavik?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Reykjavik with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and KEF can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Reykjavik?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Reykjavik from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from St. Louis to Reykjavik

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Reykjavik. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Reykjavik? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10736 reviews
8.6Crew
7.9Comfort
8.0Entertainment
7.4Food
8.2Boarding
Airline reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

2.0 MediocreDevan, May 2024AUS - BOS
Read more about Delta reviews

Absolutely nothing flight was cancelled and delayed for 2 days. Barely a heads up I want a full refund

The plane from SNA wouldn’t start after 5 tries. The team gave me an option of flying direct from LAX and giving me a Lyft ride there! Perfect!

Best airline! Always friendly and welcoming. Skyclub was great and loved the fast free wifi on board. I also love that you can pre-order your meal on the app!

Atlanta boarding crew at gate were filled with arrogance and were disrespectful. In flight crew showed indifference to the needs of passengers. This is about the flight from ATL to BDL.

The plane was FREEZING SEATS UNCOMFORTABLE Otherwise smooth Thank you

Boarding was chaotic. I didn’t finish dinner because I went to bed early. Breakfast omelet was overcooked and tasteless but croissant was better than usual. Plane was dirty—crumbs in every seam and lavatory was poorly maintained (paint peeling, etc.) and toilet paper had not been refreshed before takeoff. No cubby for storage in first and seat was narrow.

Boarding was somewhat chaotic. Unable to evaluate crew or food/drink because captain kept them seated due to turbulence. Have no idea if entertainment was offered.

West Jet has a horrible boarding process and the seats have no cushion.

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Not a fan of the diagonal partially enclosed business class seats or how they have to be converted to beds manually by crew. I prefer more isolation and user control for switching to lie flat.

No lounge access with “United First” ticket. False alarm about late flight, jeopardizing connection. Wrong meal. Loose power socket would not hold plug, could not charge device. In-flight access to text messaging did not work. Toilet seat on plane would not stay up.

We ended up with seats in the very back. So they did not recline. Have no idea why, we reserved and checked in very early. The isles were very narrow and the seats had very little leg room. But they did give us water, and a snack.

Energetic crew - flight full of swiftied going to Taylor's opening show in Paris! Long lines for bathroom made out kind of suck though

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Flight was delayed 2.5 hours - a big deal on an overnight when you plan to sleep.

I feel like they have upgraded the app since I last flew United and I found it to be super helpful. I had stopped flying United unless absolutely necessary and my experience on this trip indicates they have been working hard to improve their services.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

They canceled the flight on us very close to the flight date .

It took 66 hours to get from Seattle to Tel Aviv. As a minor, I was left for more than 12 hours in Toronto and Frankfurt without hotel and food vouchers. It took 5 layovers. It was insane and not okay

It was delayed but got us to YYZ. I had great copassengers.

Flew SEA-CA, then CA-NRT. First flight was short but very uncomfortable, dirty, and had very small overhead storage space. The seats and fans were not cleaned and had visible dirt on them. Second flight was perfect.

My second flight ended up being through United and it was fine. Again, just frustrating that it was so late.

My experience was pretty frustrating because the first leg of my flight on United (though booked through Air Canada) was delayed causing me to miss my connecting flight on Air Canada. This could have been an easy solve as there was a direct flight later that morning via Air Canada that they easily could have put me on which would have only gotten me to my destination 2 1/2 hours later but because United and Air Canada don’t seem to have good communication they gave me the run around both telling me to talk with the other which I did three times to no avail. I ended up taking the delayed flight and getting on a new connecting flight which ended up getting me to my destination 6 hours later and I missed the event I was planning to go to this evening.

Everything went smoothly and as expected. We were on time and one flight arrived early.

First time flying Air Canada and the trip was very pleasant! They did a great job getting us out of Toronto and into Rome (early!) For an international flight it was very enjoyable.

This is not a Business Class equipped airplane and even the crew apologize before take over BUT BUT Air Canada charged full business class fare

All was good, except our baggage was lost for most of a day. We are thankful that it was found quickly and delivered to our hotel. Rouge was fine outside of that problem.

Better food and more space in the seats. Also when doing the web check in both times I was going in to your site the minute you open it and there is not really many seats to choose only to buy!!!

It was ok, not as good as it used to be. The Heathrow connection was a disaster - complete anarchy, unknowledgable and skimpy assistance and signage. Gate crew at next flight was great, held the flight while my wife struggled through security.

It was great! The seats were comfortable, and they fed me during the transatlantic flight, something which I have been missing out on for the past 3 years as I travel to and from school.

This flight was cancelled at the last minute. We were rebooked on another flight but a day later. We lost a day of our vacation and paid for a night in a hotel we couldn’t use. The flights we were rebooked on (both American) messed up our seating on both flights-we didn’t get the seats we had paid for. All in all, a terrible experience.

Lost our bags in Heathrow, We didn’t receive bags in Mallorca for 3 days, out of a 7 day cycling vacation. Really inconvenient and disappointing!

We missed the flight to Barcelona because the flight from Baltimore was delayed. We flew on Vueling VW6653. Our luggage didn’t arrive. Please help us get our luggage. We are staying at Hotel Gran Via in Barcelona

The seats were tiny, being of a fairly petite build, I don’t usually expect to feel crammed and cramped in a seat, but I definitely was on this flight. I couldn’t even bend over to get anything out from under the seat in front and getting up to go to the bathroom at night with the seat backs reclined was nearly impossible. I had to do gymnastics to get over and out. For an airline that does long flights overnight, it’s kind of ridiculous.

Not connecting flights. Missed my flight from Dublin to Liverpool because I arrived at Dublin one hour too late. For this mistake, they offered me a flight from Dublin to Manchester. Thats great and all, but I waste time and money to commute to Liverpool. Be sure to check the time of your connecting flights, because they sure don’t when they sell it to you

Excellent! Great flight attendants, good food (in business class, at least), very comfortable. Touchscreen and remote wasn’t great.

In economy and food was ok, but with limited leg space (and I was in a 2 seat configuration) it was difficult to eat with a tiny seat tray. I spilt wine on my trousers. First time on British Air (I usually fly Turkish Air) and in a 777. Heathrow was pleasant but changing terminals awkward.

Book cheap flights from St. Louis to Reykjavik

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Reykjavik found on KAYAK in the last 72 hours.
7/10Wed
2 stops
26h 15mSTL-KEF
$354
7/10Wed
3 stops
31h 53mSTL-KEF
$369
7/10Wed
1 stopUnited Airlines
19h 25mSTL-KEF
$374

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Last minute flights from St. Louis to Reykjavik

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Reykjavik that are departing in the next 10 days.
5/15Wed
multi-stop
16h 55mSTL-KEF
5/17Fri
multi-stop
23h 38mKEF-STL
$883
5/15Wed
multi-stop
16h 55mSTL-KEF
5/17Fri
multi-stop
24h 23mKEF-STL
$930
5/16Thu
multi-stop
26h 25mSTL-KEF
5/23Thu
multi-stop
40h 59mKEF-STL
$943
5/16Thu
multi-stop
26h 25mSTL-KEF
5/23Thu
multi-stop
31h 30mKEF-STL
$945
5/16Thu
multi-stopUnited Airlines
34h 39mSTL-KEF
5/23Thu
multi-stopUnited Airlines
14h 47mKEF-STL
$1,076
5/16Thu
multi-stop
26h 25mSTL-KEF
5/22Wed
multi-stop
25h 40mKEF-STL
$1,161
5/15Wed
multi-stop
16h 30mSTL-KEF
5/17Fri
multi-stop
23h 38mKEF-STL
$1,164
5/15Wed
multi-stop
34h 39mSTL-KEF
5/17Fri
multi-stop
21h 30mKEF-STL
$1,308
5/16Thu
multi-stop
19h 55mSTL-KEF
5/23Thu
multi-stop
35h 40mKEF-STL
$1,340
5/16Thu
multi-stop
25h 54mSTL-KEF
5/23Thu
multi-stop
29h 25mKEF-STL
$1,534

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St. Louis - Reykjavik Flights

Departure:

St. Louis (undefined)United States

Destination:

Reykjavik (KEF)Iceland

Return flight deals:

Reykjavik - St. Louis

Cabin classes: