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Price, demand and travel trends for St. Louis to Iceland flights

Use KAYAK data on prices, travel dates, airlines and seasonal trends to compare options and book flights with more confidence.

What are the cheapest fares from St. Louis to Iceland right now?

The cheapest fare from St. Louis to Iceland in the last week was $709 round-trip, to Reykjavik Keflavik Intl (KEF).

What’s the cheapest month to fly from St. Louis to Iceland?

March is the cheapest time of year to fly, with average fares of $865. Prices are highest in February, when average flight costs increase to around $2,621.

Which airport in Iceland is the cheapest to fly to from St. Louis?

All flights from St. Louis to Iceland arrive at Reykjavik Keflavik Intl (KEF). On average, round-trip fares are around $1,057.

What’s the cheapest day to fly from St. Louis to Iceland?

Monday tends to be the cheapest day to fly from St. Louis to Iceland, while Wednesday is the most expensive. Fares run about 32% higher that day, based on the past 12 months of KAYAK data.

What's the cheapest time of day to fly from St. Louis to Iceland?

Data from the past 12 months shows it's cheapest to fly to Iceland during the morning with average prices of $811. The evening is the most expensive time to fly, with average prices of $1,062.

Key details for St. Louis to Iceland flights

Low season

March

Cheapest flight

$402
Beat the crowds with an average 83% drop in travelers.
The most popular month to fly with an average 104% increase in travelers.
One-way flight from St. Louis to Reykjavik Keflavik Intl Airport

Your St. Louis to Iceland flight questions, answered

Find helpful answers about this route, including flight times, airports, airlines and booking tips.

  • Is now a good time to book a flight from St. Louis to Iceland?

    Yes. Fares from St. Louis to Iceland are low right now. As a rule of thumb, a round-trip under $915 (cheaper than most fares this year) is a good deal, so if you spot one at or below that, it's a good time to book.

  • How much should I budget for a flight from St. Louis to Iceland?

    Over the past 12 months, round-trip fares from St. Louis to Iceland have ranged from $915 to $1,280.

  • What airlines fly nonstop from St. Louis to Iceland?

    Based on the flight schedule for the next 3 months, no airline regularly operates nonstop flights from St. Louis to Iceland. One-stop options include:

    • Southwest
    • United Airlines
    • American Airlines

  • Which cabin classes are available on flights from St. Louis to Iceland?

    On flights from St. Louis to Iceland you can book Economy Class, Premium Economy Class, Business Class or First Class.

  • What are some popular landmarks in Iceland?

    KAYAK travelers' favorite landmarks in Iceland include:

    • Harpa
    • Laugardalsholl
    • The Settlement Exhibition: Reykjavík 871±2
    • Laugardalsvollur

  • 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.

Your guide to booking St. Louis to Iceland flights

Get tips on when to book, when to fly and what to know before your trip.
  • If your travel dates are flexible, book your trip for March when flights are typically cheapest and avoid February when prices are at their highest.
  • Flying on Monday is usually the cheapest. Flights on Wednesday cost about 32% more on average, so being flexible with your travel dates could help you save.
  • Start your trip in Reykjavik, which is the most popular destination in Iceland. From there, it's easy to continue on to other popular destinations such as Vik, Hofn and Keflavik.
  • 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 airlines flying 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.
7.8
DeltaOverall score based on 8694 reviews
7.8Comfort
7.2Food
7.8Entertainment
8.1Boarding
8.5Crew
Airline reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

2.0 MediocreAbhay, Oct 2026
Read more Delta reviews

The flight was delayed and passengers were told that they will miss connections as flight may get 40-55 min late.

The flight was delayed and knowing I was going to miss my connection, nothing was done proactively to try and get me rebooked. It was an act of congress to do so. This is not on the crew, but on the experience itself

Your survey needs a N/A option. I didn’t use the entertainment or eat food.

Flight was delayed multiple time and for more than 1 hr. My onward flight from BOS to MCI was also delayed. These delays have caused me so much inconvenience and Delta does nothing to ensure flights take off on time. No one knew why the inbound flight was delayed and what was the issue.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

The plane smelled like a sewer. Multiple passengers complained. It’s a safety and quality issue to clean these planes.

We were delayed 2 hours leaving STL. I had 20 mins from when we landed in SLC terminal A to make it to SLC terminal B. I had to actually run! thankfully I made my flight but 3/4 legs were delayed to some capacity.

Requested for warm or hot water because of throat pain, it was denied. The entertainment system was hung, requested the crew to turn it off, instead of turning it off they rebooted the device. It was stuck again, no one bothered to check.

A couple flight attendants in business class had bad attitudes and provided poor service. They did provide drinks or refill drinks. They talked to certain passengers for long periods of time and ignored others.

Great Brasilia aircraft - not a Boeing 757 like the next part of the flight. Flight from MCI to IAD was great, on-time, comfortable, did I mention that? The flight from IAD to EDI was painful. One of the reasons I won't fly United again? Boeing 757, with a seat pitch and material that was horrendous. Worst aircraft ever, made worse by United sardine-can tight seating. Oh, and the connection window, 45 minutes, really? At IAD, in different concourses? What idiot came up with that flight scenario? Happily, (for me and my travel insurance people) the flight was late (reminiscent of American Airlines). The crew was professional and courteous.

On boarding crew at the airport called in the boarding numbers too early meaning before the previous line was completed resulting in later numbers getting to board ahead. Also she asked those who boarded from number 3 to have the tags in their carry-on bags and leave it in the jet bridge. Most of the overhead bins were empty though. This is more work for the ground staff in addition to more inconvenience for passengers waiting to get their carry-ons from the jet bridge.

Our flight was great with an unexpected upgrade. However, four days into our travel we are still without a piece of luggage. The bag tracker has not been accurate, the airline is not communicating with me or the luggage delivery service and no one is willing to take responsibility or guarantee any kind of support or reimbursement. Unfortunately, we do not have the option to easily shop to replace items as we are currently on a cruise. I have been very disappointed by United Airlines response.

HORRIBLE, my initial flight was cancelled, they made me pay $200 extra dollars and that got cancelled as well! After 6 cancellations I decided to get a refund because I needed to get home to my babies. Out of $1000+ dollars they offered me only $40 in refund! Totally unacceptable! The flight that they cancelled I was able to fly it on another airline. I had to spend $400 on one way tickets just to get home! I’m still getting the runaround.

Flight was delayed only slightly before takeoff due to traffic control. However, the flight arrived early to ORD. Good flight. United has been very reliable for me.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

Onboarding - it would be great to see on the screen what group they were boarding. It was very confusing on who was boarding (even though they called it out) they were not clear and the space to board was strange.

Older plane. Food was really bad, almost not worth the effort. Huge difference with European based airlines.

More options for your flight from St. Louis to Iceland

Complete your trip to Iceland with a hotel stay or car rental