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Cheap flights from St. Louis (STL) to Keflavik Intl (KEF) from $399

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 7/22. 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.
STL — KEF
Jun 7 — Jun 141
From?
To?
Fri 6/7
Fri 6/14
1 adult, Economy
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Cheap flight deals from St. Louis to Keflavik Intl

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Keflavik Intl (KEF). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 2, 2024.

Popular in

December

Cheapest in

September

Average price

$1,071

Round-trip from

$336
High demand for flights, 57% potential price rise
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Best time to find cheap flights, 32% potential price drop
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Average for round-trip flights in June 2024
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From Lambert-St Louis to Reykjavik Keflavik Intl
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What is the cheapest day to fly round-trip from St. Louis to Reykjavik Keflavik Intl Airport?

Users have found that leaving on a Tuesday can be a cost-effective option. It’s possible to save up to 55% on your flight compared to booking on days when demand is much higher.

How far in advance should I book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Find a great deal and save up to 38% by booking at least 42 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from St. Louis to Reykjavik Keflavik Intl Airport within the next two weeks, with the cheapest ticket starting at $1,053.

What is the cheapest month to fly from St. Louis to Reykjavik Keflavik Intl Airport?

The best pricing can be found in the month of February. Prices to Reykjavik Keflavik Intl Airport from St. Louis average $1,082. You can even find prices in February for less than $1,082, as users have found deals to Reykjavik Keflavik Intl Airport from as low as $784. The month of November appears to be one of the more expensive times to travel to Reykjavik Keflavik Intl Airport from St. Louis. Flying in the targeted month can save you up to 50%.

What is the cheapest time of day to fly from STL to KEF?

When flying from St. Louis to Reykjavik Keflavik Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 11% versus a flight at noon.

Cheap American Airlines flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Keflavik Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.
Take a peek at the cheapest American Airlines flights we've detected traveling from St. Louis to Reykjavik. Be sure to come back soon if the deals available don't appeal to you at this time.
Wed 10/26:00 amSTL - KEF
2 stops22h 45mAmerican Airlines
Wed 10/911:05 amKEF - STL
2 stops27h 03mAmerican Airlines
Deal found 6/1$741
Wed 10/26:00 amSTL - KEF
2 stops22h 45mAmerican Airlines
Tue 10/810:10 amKEF - STL
3 stops28h 04mAmerican Airlines
Deal found 6/1$798
Fri 9/66:00 amSTL - KEF
2 stops22h 20mAmerican Airlines
Fri 9/1310:35 amKEF - STL
3 stops27h 25mAmerican Airlines
Deal found 6/1$809
Wed 10/26:00 amSTL - KEF
3 stops22h 45mAmerican Airlines
Tue 10/810:10 amKEF - STL
3 stops28h 21mAmerican Airlines
Deal found 6/1$957
Sat 6/81:42 pmSTL - KEF
2 stops39h 18mAmerican Airlines
Sun 6/1610:25 amKEF - STL
3 stops27h 40mAmerican Airlines
Deal found 6/1$2,073
Sat 6/82:56 pmSTL - KEF
2 stops38h 04mAmerican Airlines
Sun 6/1610:25 amKEF - STL
3 stops27h 40mAmerican Airlines
Deal found 6/2$2,177

Cheap Delta flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Keflavik Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.
To aid your search, here are some of the cheapest Delta flights we've found from St. Louis to Reykjavik. Deals are refreshing constantly so come back soon for more options.
Sun 9/2912:40 pmSTL - KEF
1 stop15h 50mDelta
Tue 10/811:25 amKEF - STL
1 stop28h 44mDelta
Deal found 6/1$648
Mon 10/146:45 amSTL - KEF
1 stop18h 35mDelta
Mon 10/218:50 amKEF - STL
2 stops29h 01mDelta
Deal found 6/2$676
Sun 10/66:30 amSTL - KEF
1 stop18h 50mDelta
Wed 10/1611:25 amKEF - STL
1 stop14h 25mDelta
Deal found 6/1$747
Mon 10/142:05 pmSTL - KEF
1 stop11h 15mDelta
Mon 10/218:50 amKEF - STL
1 stop16h 41mDelta
Deal found 6/2$778
Tue 10/86:45 amSTL - KEF
2 stops21h 45mDelta
Wed 10/1611:25 amKEF - STL
1 stop14h 25mDelta
Deal found 6/1$782
Mon 9/3012:59 pmSTL - KEF
1 stop15h 31mDelta
Tue 10/88:50 amKEF - STL
2 stops19h 45mDelta
Deal found 6/1$801
Thu 10/311:15 amSTL - KEF
1 stop14h 05mDelta
Tue 10/811:25 amKEF - STL
1 stop28h 44mDelta
Deal found 6/1$804
Mon 10/710:00 amSTL - KEF
2 stops15h 20mDelta
Wed 10/1611:25 amKEF - STL
1 stop14h 25mDelta
Deal found 6/1$832
Thu 7/411:25 amSTL - KEF
1 stop13h 55mDelta
Sat 7/139:30 amKEF - STL
1 stop17h 37mDelta
Deal found 6/1$847

Cheap St. Louis to Keflavik Intl flights in June & July 2024

Find cheap flight options from St. Louis to Keflavik Intl specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Prices were last updated on June 2, 2024.
These are some of the most attractive deals on flights from St. Louis to Reykjavik in 2024. Check back soon for alternative fares.
Fri 6/75:00 pmSTL - KEF
3 stops34h 35mMultiple Airlines
Tue 6/189:45 amKEF - STL
3 stops31h 00mMultiple Airlines
Deal found 6/1$710
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Tue 6/189:35 amKEF - STL
2 stops32h 30mMultiple Airlines
Deal found 6/1$795
Wed 6/56:30 amSTL - KEF
2 stops21h 05mAir Canada
Wed 6/1210:00 amKEF - STL
1 stop10h 21mAir Canada
Deal found 5/31$814
Wed 6/56:30 amSTL - KEF
2 stops21h 05mAir Canada
Wed 6/1210:00 amKEF - STL
2 stops34h 41mAir Canada
Deal found 5/31$824
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Tue 6/189:35 amKEF - STL
3 stops32h 30mMultiple Airlines
Deal found 6/1$832
Sat 6/811:00 amSTL - KEF
2 stops40h 35mAir Canada
Sun 6/169:45 amKEF - STL
2 stops34h 56mAir Canada
Deal found 6/1$863
Wed 6/51:55 pmSTL - KEF
3 stops33h 50mMultiple Airlines
Wed 6/123:50 pmKEF - STL
3 stops30h 38mMultiple Airlines
Deal found 5/31$868
Sat 6/84:05 pmSTL - KEF
2 stops35h 30mAir Canada
Sun 6/169:45 amKEF - STL
1 stop16h 20mAir Canada
Deal found 6/1$875
Thu 6/278:05 amSTL - KEF
2 stops19h 30mAir Canada
Thu 7/410:00 amKEF - STL
2 stops31h 17mAir Canada
Deal found 6/2$890

St. Louis to Keflavik Intl 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Keflavik Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.
These are some of the most attractive deals on flights from St. Louis to Reykjavik in 2024. Check back soon for alternative fares.
Tue 8/610:10 amSTL - KEF
2 stops17h 25mAir Canada
Fri 8/2310:00 amKEF - STL
2 stops16h 05mAir Canada
Deal found 6/1$529
Tue 8/63:10 pmSTL - KEF
1 stop12h 20mMultiple Airlines
Fri 8/2310:00 amKEF - STL
1 stop15h 01mMultiple Airlines
Deal found 6/1$562
Fri 9/610:10 amSTL - KEF
1 stop17h 25mAir Canada
Fri 9/1310:00 amKEF - STL
2 stops31h 22mAir Canada
Deal found 6/1$567
Fri 9/611:10 amSTL - KEF
2 stops16h 25mAir Canada
Fri 9/1310:00 amKEF - STL
2 stops31h 22mAir Canada
Deal found 6/1$571
Fri 9/610:10 amSTL - KEF
1 stop17h 25mAir Canada
Fri 9/1310:00 amKEF - STL
1 stop10h 20mAir Canada
Deal found 6/1$579
Wed 7/314:05 pmSTL - KEF
1 stop11h 30mAir Canada
Thu 8/89:45 amKEF - STL
2 stops34h 55mAir Canada
Deal found 6/1$586
Wed 7/314:05 pmSTL - KEF
1 stop11h 30mAir Canada
Thu 8/89:45 amKEF - STL
1 stop16h 20mAir Canada
Deal found 6/1$598
Fri 9/134:05 pmSTL - KEF
1 stop11h 30mMultiple Airlines
Thu 9/191:10 amKEF - STL
2 stops43h 10mMultiple Airlines
Deal found 5/31$599
Tue 8/62:16 pmSTL - KEF
1 stop11h 04mAir France
Fri 8/238:50 amKEF - STL
1 stop13h 31mAir France
Deal found 6/1$602

St. Louis to Keflavik Intl flights leaving soon

Find last-minute flight options from St. Louis to Keflavik Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.
Have a look at some of the last-minute flights available departing from St. Louis to Reykjavik. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Fri 6/75:00 pmSTL - KEF
3 stops34h 35mMultiple Airlines
Tue 6/189:45 amKEF - STL
3 stops31h 00mMultiple Airlines
Deal found 6/1$710
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Tue 6/189:35 amKEF - STL
2 stops32h 30mMultiple Airlines
Deal found 6/1$795
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Tue 6/189:35 amKEF - STL
3 stops32h 30mMultiple Airlines
Deal found 6/1$832
Sat 6/811:00 amSTL - KEF
2 stops40h 35mAir Canada
Sun 6/169:45 amKEF - STL
2 stops34h 56mAir Canada
Deal found 6/1$863
Sat 6/85:31 pmSTL - KEF
2 stops34h 04mAir Canada
Sun 6/169:45 amKEF - STL
2 stops34h 56mAir Canada
Deal found 6/2$868
Sat 6/84:05 pmSTL - KEF
2 stops35h 30mAir Canada
Sun 6/169:45 amKEF - STL
1 stop16h 20mAir Canada
Deal found 6/1$875
Sat 6/811:00 amSTL - KEF
1 stop16h 35mAir Canada
Sun 6/169:45 amKEF - STL
1 stop16h 20mAir Canada
Deal found 6/1$898
Fri 6/75:31 pmSTL - KEF
2 stops34h 04mMultiple Airlines
Mon 6/1712:25 amKEF - STL
2 stops19h 56mMultiple Airlines
Deal found 6/1$899
Fri 6/76:30 amSTL - KEF
1 stop21h 00mMultiple Airlines
Tue 6/189:45 amKEF - STL
2 stops34h 36mMultiple Airlines
Deal found 6/1$954

One-way flights to Keflavik Intl from St. Louis

Search for one-way flight options from St. Louis to Keflavik Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,807,690 searches. Data last updated June 2, 2024.
Users traveling one-way from St. Louis to Reykjavik can select one of these great deals. Those seeking round-trip flights from St. Louis to Reykjavik should utilize the search form at the the top of the page.
Mon 7/224:05 pmSTL - KEF
1 stop11h 30mAir Canada
Deal found 6/1$399
Mon 7/226:30 amSTL - KEF
2 stops21h 05mAir Canada
Deal found 6/1$404
Mon 7/2212:15 pmSTL - KEF
3 stops20h 30mMultiple Airlines
Deal found 6/1$594
Thu 6/2012:15 pmSTL - KEF
2 stops13h 25mMultiple Airlines
Deal found 6/1$615
Thu 6/204:45 pmSTL - KEF
3 stops34h 50mMultiple Airlines
Deal found 6/1$627
Thu 6/209:50 amSTL - KEF
1 stop17h 45mAir Canada
Deal found 6/1$1,021

Find flights from St. Louis to Keflavik Intl within your budget

Customize your flight search to find flights from St. Louis to Keflavik Intl 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 2,807,690 searches. Data last updated June 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$529 - $1,006

Route

Depart

Return

Price

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 8/6

2 stops17h 25m

Reykjavik Keflavik Intl

Fri 8/23

2 stops16h 05m

$529

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 8/6

1 stop12h 20m

Reykjavik Keflavik Intl

Fri 8/23

1 stop15h 01m

$562

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 8/6

1 stop11h 04m

Reykjavik Keflavik Intl

Fri 8/23

1 stop13h 31m

$602

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

1 stop15h 50m

Reykjavik Keflavik Intl

Tue 10/8

1 stop28h 44m

$648

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sun 9/29

2 stops14h 51m

Reykjavik Keflavik Intl

Tue 10/8

2 stops27h 58m

$715

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/2

2 stops22h 45m

Reykjavik Keflavik Intl

Wed 10/9

2 stops27h 03m

$741

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Tue 10/1

2 stops16h 19m

Reykjavik Keflavik Intl

Tue 10/8

2 stops16h 25m

$791

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Fri 10/4

1 stop16h 30m

Reykjavik Keflavik Intl

Mon 10/7

2 stops20h 34m

$952

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Wed 10/2

2 stops31h 03m

Reykjavik Keflavik Intl

Tue 10/8

2 stops27h 52m

$1,006

Flights are sorted by cheapest first

Deals found on 6/1

How far ahead should I book a flight from St. Louis to Reykjavik Keflavik Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from St. Louis to Keflavik Intl. Price data was last updated on May 31, 2024.
To ensure you get the cheapest price possible for a flight from St. Louis to Reykjavik Keflavik Intl Airport, you should look to book at least 28 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
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What is the cheapest day to fly from St. Louis to Reykjavik Keflavik Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Keflavik Intl. Price data was last updated on May 26, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Reykjavik Keflavik Intl Airport flight should consider departing on Wednesday at noon when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
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Best time to book a flight from St. Louis to Keflavik Intl

Have a flexible travel schedule? Discover the best time to fly to Keflavik Intl from St. Louis 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.

Temperature and rainfall in Keflavik Intl by month

Plan your trip to Keflavik Intl by taking into account the average temperature and rainfall totals by month.

KEF

Temperature

32 - 51.8 °F

Reviews of airlines servicing Keflavik Intl

Get insights into the airlines that provide service to Keflavik Intl. 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 Keflavik Intl. Reviews last updated June 2, 2024.
To help decide which airline to fly from St. Louis to Reykjavik, see what other customers have to say about American Airlines, Delta and United Airlines. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Delta
8.0
Very good
10,402 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Austrian Airlines
7.7
Good
1,016 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Air France
7.5
Good
1,728 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

United Airlines
7.4
Good
10,755 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

American Airlines
7.3
Good
14,260 reviews
Delta
8.0
Very good
10,402 reviews
Check prices

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Entertainment

8.0

Overall

8.0

Reviews

1 / 10

Bad experience with the staff boarding the gate. I couldn’t board with my carry on, personal item and a funny bag. I had to put my passport inside my pockets and put the funny bag inside the personal item. Then after passing the staff pull out everything again.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Keflavik Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Reykjavik Keflavik Intl?

    Located just 12.7 mi from the city center, Lambert-St Louis is the airport most travelers will use when flying to Reykjavik Keflavik Intl from St. Louis. Booking flights from Lambert-St Louis (STL) to Reykjavik Keflavik Intl should be relatively easy as there are 0 daily outbound flights to Reykjavik Keflavik Intl from 4 different airlines.

  • Can I find flights from St. Louis to Reykjavik Keflavik Intl Airport for under $600 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Reykjavik Keflavik Intl Airport for under $600. The cheapest flight booked recently is on Air Canada for just $529, but on average you can expect to pay $611.

  • Are there last-minute flights available from St. Louis to Reykjavik Keflavik Intl Airport for under $800?

    There are currently 20+ open flights from St. Louis to Reykjavik Keflavik Intl Airport within the next 7 days for less than $800.

  • What are the cheapest airlines flying from St. Louis to Reykjavik Keflavik Intl Airport round-trip?

    Our cheapest airline available from St. Louis to Reykjavik Keflavik Intl Airport is Air Canada. Our recent data shows that you can find tickets from as low as $529 on this airline. Additional options worth looking into are Air France and Delta, starting at $602 and $648 round-trip. Air Canada is 52% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does STL to KEF mean?

    STL stands for Lambert-St Louis Airport, while KEF stands for Reykjavik Keflavik Intl Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

  • Can I find deals for flights from St. Louis to Keflavik Intl that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Keflavik Intl flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Keflavik Intl with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Keflavik Intl flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Keflavik Intl that include hotel bookings?

    Yes. In addition to deals on St. Louis to Keflavik Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Keflavik Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Keflavik Intl.

  • Can I find deals for business class flights from St. Louis to Keflavik Intl?

    Yes. Cheapflights offers flight deals from St. Louis to Keflavik Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Keflavik Intl that allow pets onboard?

    Many airlines flying from St. Louis to Keflavik Intl offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Keflavik Intl?

    Yes, you can often find last-minute deals on St. Louis to Keflavik Intl flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Reykjavik Keflavik Intl Airport flight deals updated?

    The St. Louis to Reykjavik Keflavik Intl Airport flight deals you see on this page were last updated on 6/1.

  • What are the most popular airlines that fly from St. Louis to Reykjavik Keflavik Intl Airport?

    Before booking your flight from St. Louis to Reykjavik Keflavik Intl Airport check out the most popular airlines for this route: Air Canada, British Airways or Delta.

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

    Currently, January is the cheapest month in which you can book a flight from St. Louis to Reykjavik Keflavik Intl Airport (average of $339). Flying from St. Louis to Reykjavik Keflavik Intl Airport in July is currently the most expensive (average of $710). 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.

See more FAQs

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Alternative routes for St. Louis to Keflavik Intl
See prices for flight routes from nearby airports that may be better suited for you.

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Top 4 airlines flying from St. Louis to Keflavik Intl

Discover the top 4 airlines that operate flights from St. Louis to Keflavik Intl. 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 2,807,690 searches. Data last updated June 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$690Average$1,055FlexibilityNo cancel feeOn-time67%
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British AirwaysCheapest$695Average$757FlexibilityNo cancel feeOn-time70%
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DeltaCheapest$711Average$957FlexibilityNo cancel feeOn-timeN/A
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United AirlinesCheapest$813Average$1,176FlexibilityNo cancel feeOn-time69%
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