$401 Find Cheap Flights from St. Louis to Iceland

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 Iceland departing on 4/13. 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
1 adult, Economy, 0 bags

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Book Cheap St. Louis to Iceland Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Iceland 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Iceland

Wed, May 6 - Sun, May 10
Delta Logo
6:32 am - 9:30 am
STL
-
KEF
21h 58m
2 stops
Delta Logo
8:50 am - 11:01 pm
KEF
-
STL
19h 11m
2 stops
$559Delta
Wed, May 6 - Sat, May 9
Lufthansa Logo
3:30 pm - 1:05 pm
STL
-
KEF
16h 35m
1 stop
Lufthansa Logo
12:20 am - 1:25 pm
KEF
-
STL
18h 05m
1 stop
$759Lufthansa
Wed, Apr 1 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 1:05 pm
STL
-
KEF
16h 35m
1 stop
Lufthansa Logo
12:20 am - 1:25 pm
KEF
-
STL
18h 05m
1 stop
$792Lufthansa
Wed, Feb 25 - Wed, Mar 4
Multiple Airlines Logo
7:00 am - 6:15 am
STL
-
KEF
17h 15m
1 stop
Multiple Airlines Logo
5:00 pm - 1:51 pm
KEF
-
STL
26h 51m
1 stop
$803Multiple Airlines
Fri, Apr 3 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 11:25 pm
STL
-
KEF
26h 55m
1 stop
Lufthansa Logo
2:50 pm - 1:25 pm
KEF
-
STL
27h 35m
2 stops
$810Lufthansa
Fri, Apr 3 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 11:25 pm
STL
-
KEF
26h 55m
1 stop
Lufthansa Logo
2:20 pm - 1:25 pm
KEF
-
STL
28h 05m
1 stop
$826Lufthansa
Fri, Apr 3 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 11:25 pm
STL
-
KEF
26h 55m
1 stop
Lufthansa Logo
2:20 pm - 1:25 pm
KEF
-
STL
28h 05m
1 stop
$830Lufthansa
Fri, Apr 3 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 12:10 am
STL
-
KEF
27h 40m
2 stops
Lufthansa Logo
2:50 pm - 1:25 pm
KEF
-
STL
27h 35m
2 stops
$833Lufthansa
Thu, Apr 16 - Mon, Apr 20
Scandinavian Airlines Logo
11:43 am - 9:40 am
STL
-
KEF
40h 57m
2 stops
Scandinavian Airlines Logo
10:30 am - 11:33 pm
KEF
-
STL
42h 03m
2 stops
$847Scandinavian Airlines
Fri, Apr 3 - Sat, Apr 11
Lufthansa Logo
3:30 pm - 12:10 am
STL
-
KEF
27h 40m
2 stops
Lufthansa Logo
2:50 pm - 1:25 pm
KEF
-
STL
27h 35m
2 stops
$851Lufthansa
Booking Insights

KAYAK's insights & trends for St. Louis to Iceland flights

Get data-powered insights and trends into flights from St. Louis to Iceland to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between St. Louis and Iceland?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from St. Louis to Iceland.

There are 4 airlines that fly nonstop from St. Louis to Iceland. They are: KLM, Air Canada, Delta and United Airlines. The cheapest price of all airlines flying this route was found with Air Canada at $566 for a round-trip flight to Reykjavik Keflavik Intl Airport (KEF). On average, Air Canada offers the best prices for nonstop flights between St. Louis and Iceland.

Good to know

Cheapest flight$401
Flight from St. Louis to Reykjavik

FAQs - booking Iceland flights

  • Will I have to get a visa to fly from St. Louis to Iceland?

    Whether you're flying from St. Louis to Iceland for business or pleasure, American citizens won't need to worry about getting a visa if you'll be staying for less than 90 days. But you will need to have a valid passport handy , and you'll also need to show proof of a return ticket to the U.S.

  • Where will layovers on flights from St. Louis to Iceland typically take place?

    You will normally have to make at least one stop on flights from St. Louis to Iceland, and sometimes you'll need to make even more than one stop to get there. Each airline that flies to Iceland will use different airports for layovers, but Newark Liberty International Airport (EWR), Minneapolis-Saint Paul International Airport (MSP), Oslo Airport (OSL) and Copenhagen Airport (CPH) are a few of the most common options they'll have.

  • Which airlines that fly from St. Louis to Iceland serve the best meals?

    United Airlines will serve you a tasty three-course meal on international flights that will include a salad and a main course along with a dessert. If flights from St. Louis to Iceland take more than 12 hours, you'll also receive a sandwich and candy in most cases.

  • Is there a specific airline I should fly with to make a flight to Iceland more sustainable?

    Flying from St. Louis to Iceland with an airline like Air Canada will automatically make your flight more sustainable. Air Canada is diligently working on upgrading its fleet and doing away with most single-use plastics on its flights as it works to become carbon-neutral.

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

    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 Iceland.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Iceland 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 Iceland?

    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 from St. Louis to Iceland with an airline and back with another airline.

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

    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 from St. Louis to Iceland up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to Iceland

  • Many airlines can provide you with flights from St. Louis to Iceland. Air Canada, American Airlines, Delta, and United Airlines are several airlines that fly out of St. Louis Lambert International Airport (STL) to Keflavík International Airport (KEF).
  • While shopping for flights from St. Louis to Iceland, narrow down your options to only one-stop flights. You shouldn't get stuck making two or three stops between St. Louis Lambert International Airport and Keflavík International Airport. United Airlines offers one-stop flights that are scheduled to take just over 10 hours. Flights with more than one stop often take two or even times as long.
  • If you'll be flying from St. Louis Lambert International Airport to Iceland with children, choosing a kid-friendly airline will be a good idea. Delta is a great option for parents, as this airline provides kids with activity kits and in-flight movies to keep them busy.
  • Those who can afford to fly first class when traveling from St. Louis to Iceland should try to do it. You'll be treated to a lie-flat seat when you fly first class with airlines like Air Canada and American Airlines. This seat will help you sleep throughout most of your flight. You'll also be treated to extra in-flight entertainment and dining options when you're sitting in first class.
  • St. Louis Lambert International Airport has a handful of lounges you can use if you need to kill time after arriving 2 to 3 hours early for an international flight to Iceland. The Wingtips Lounge, for example, is available to passengers from all airlines for a small fee.

Reviews of the top 4 airlines serving from St. Louis to Iceland

 
Need help choosing which airline to fly with from St. Louis to Iceland? 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.
7.9
DeltaOverall score based on 8034 reviews
7.8Entertainment
7.9Comfort
7.2Food
8.1Boarding
8.5Crew
Airline reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

8.0 ExcellentG, Jan 2026
FLL - ATL
Read more Delta reviews

Food is basically Sun Chips, cookies or Cheezits. I had an exit row seat so I had plenty of room. The crew was very nice and efficient. Pilot kept us informed. Pretty good flight.

Air travel sucks. It continues to be awful for all airlines. No shame on delta alone.

It was Delta, but the flight attendants were stressful and disrespectful. I am a diamond member a travel weekly. I have not had a negative thing to share in quite some time. But this was noticeable.

Comfort Plus seat 11E seemed smaller than prior flights. The movie selection is good. Watched most of the most recent Tron movie. I'll watch the remaining part later as my movie is saved in the Delta Seatback Experience.

Flight was late from Newark to Atlanta, I asked flight attendant to please let my family of 3 out first when we landed to Atlanta because we were late for our connecting flight to Quito. She didn't and we were late for 5 minutes we couldn't board the plane and spend hours trying to get another flight with customer service for the next day.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Late delayed flight delays boarding and delays leaving and delays on arrival too. Cramped plane no room no food.

DTW line is too long. The flights from DTW to BWI are always delayed for unknown reasons.

Delta canceled our flight and we had to scramble to find another airline to get home. Phoenix is not a delta hub so they didn’t have another plane. It would have been a red eye though Salt Lake City. Getting in at 5am. No bueno.

This flight was no comparison to our prior flight. I'm thinking it all has to do with the age of the aircraft.

Flight was on time, staff are friendly and helpful onboard.

Terrible last row seats many seats available but no offer to move to better seat

Delay on my previous leg, had to run to catch my flight. But that happens. Overall ok.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

Short flight so it was okay. Nice crew, all very pleasant and professional. We were near the back in row 27 so just as we got our drinks, we started our descent so had to drink very quickly!

left on time, reasonable boarding process arrived early luggage came out quickly

I like flying first class, and United has a nice one

Teeny tiny bathrooms, crew was not realistic about when we'd arrive.

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

Some flight attendants were great others were cranky. Seats were very tight and sitting on an aisle was very hard as the carts and people walking constantly bumped shoulder and arm.

It was great with United overall except for two things. 1) It was a 5-hour flight and we were with kids, so we were asking for extra snacks. They were extremely reticent to dole them out even though there wasn't any meal and the kids were starting to hit their limit towards the end. 2) Baggage didn't arrive until 80 minutes after we landed.

They lost my luggage, so, not happy. The crew was nice but my suitcases never made it, still trying to find out what happened!

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Perfect flight. Smooth flight. Arrived 20 minutes early at destination. Excellent service.

The flights were on time which was great give. It was holiday travel season and there’d been some weather issues. The only complaint and this is every time with United is the terrible seat design. The head rest is not built for comfort and having my neck bent forward for a cross country trip reminded me while I try not to take United flights as a rule.

I waiting for 2 hrs to retrieve my luggage. Didn't get home till 3am.

The flight left late and I didn’t get a glass of bubbly upon boarding (which I’m used to when booking business class on other flights), but otherwise it was a pleasant flight with lovely, helpful crew members and I enjoyed my meal.

Flight cancellations, delays, mass confusion and disorganization! That’s Air Canada for you, nothing new. I would have chosen a different airline if it were an option, and Air Canada continues to prove they don’t care about their customers.

everything was fine. but paying for 1 piece of check-in luggage and denying passengers to board with carry-on luggage which by air line's standards does not fit is not acceptable. when one travels for a longer time one needs to have some essentials

Couldn't fit knees, only 1 toilet working, didn't get anything to drink cause the stewards were not able to get to us

Flight was canceled for a reason they knew hours before but did not mention. Next the gate chnage from 37 to 38 at least 10 times. Ridiculous.

The flight from SFO to YVR was delayed and my bag did not make it to my next flight from YVR to SYD. It took almost 3 days after I landed to get my bag and when I got it, it was filled with dust

Our biggest complaint about Air Canada is that if you don’t like your seat during check-in, there’s a fee to move elsewhere. On our flight from YUL to FFL, we were charged to change seats—just regular seats. What’s maddening is that the plane wasn’t even full; there were even a few people sleeping in the middle row sections (entire rows, completely empty), using them as beds. In my opinion, charging passengers for seat changes is a cash grab by Air Canada. They are definitely not the airline they were back in the day. I suppose they need to gouge the consumer now that they pay their attendants while on ground. One out of 10.

Nothing specific. Cabin temperature was too high for some reason.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Everything you need to know for your flight from St. Louis to Iceland

Information on your arrival and departure airports