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Cheap flights from St. Louis (STL) to Keflavik Intl (KEF) from $641

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/21. 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
May 16 — May 231
From?
To?
Thu 5/16
Thu 5/23
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 May 11, 2024.

Popular in

December

Cheapest in

September

Average price

$969

Round-trip from

$338
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 May 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 57% 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 $1,086. You can even find prices in February for less than $1,086, 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 49%.

When is the cheapest time to fly from St. Louis to Reykjavik Keflavik Intl Airport (STL - 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 10% versus a flight at noon.

Cheap Air Canada flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by Air Canada 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 2,684,066 searches. Data last updated May 11, 2024.
Take a peek at the cheapest Air Canada 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.
Sat 9/215:20 pmSTL - KEF
2 stops34h 15mAir Canada
Sun 9/2910:00 amKEF - STL
1 stop10h 20mAir Canada
Deal found 5/9$641
Fri 9/610:10 amSTL - KEF
2 stops17h 25mAir Canada
Sun 9/1510:00 amKEF - STL
2 stops16h 05mAir Canada
Deal found 5/10$738
Fri 9/1312:00 pmSTL - KEF
1 stop15h 35mAir Canada
Tue 9/1710:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/9$758
Wed 8/74:05 pmSTL - KEF
1 stop11h 30mAir Canada
Wed 8/1410:00 amKEF - STL
1 stop10h 21mAir Canada
Deal found 5/10$764
Mon 8/512:00 pmSTL - KEF
2 stops15h 35mAir Canada
Mon 8/1210:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/10$827
Wed 8/74:05 pmSTL - KEF
1 stop11h 30mAir Canada
Tue 8/1310:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/10$913
Thu 8/810:10 amSTL - KEF
2 stops17h 25mAir Canada
Fri 8/1610:00 amKEF - STL
1 stop15h 01mAir Canada
Deal found 5/10$919
Sun 6/99:50 amSTL - KEF
2 stops17h 45mAir Canada
Sun 6/1610:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/10$932
Sun 6/99:50 amSTL - KEF
2 stops17h 45mAir Canada
Sun 6/1610:00 amKEF - STL
2 stops34h 41mAir Canada
Deal found 5/10$936

Cheap United Airlines flights from St. Louis to Keflavik Intl

Explore cheap flight options specifically provided by United 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 2,684,066 searches. Data last updated May 11, 2024.
To aid your search, here are some of the cheapest United Airlines flights we've found from St. Louis to Reykjavik. Deals are refreshing constantly so come back soon for more options.
Mon 10/148:05 amSTL - KEF
2 stops17h 55mUnited Airlines
Mon 10/2111:00 amKEF - STL
2 stops32h 48mUnited Airlines
Deal found 5/10$657
Mon 8/510:19 amSTL - KEF
2 stops15h 41mUnited Airlines
Tue 8/1312:00 pmKEF - STL
2 stops15h 17mUnited Airlines
Deal found 5/10$750
Fri 9/1311:10 amSTL - KEF
2 stops14h 50mUnited Airlines
Tue 9/1711:00 amKEF - STL
2 stops14h 36mUnited Airlines
Deal found 5/9$756
Fri 6/76:30 amSTL - KEF
2 stops19h 30mUnited Airlines
Tue 6/1811:00 amKEF - STL
2 stops13h 19mUnited Airlines
Deal found 5/10$945
Fri 6/76:30 amSTL - KEF
2 stops21h 05mUnited Airlines
Fri 6/1412:00 pmKEF - STL
1 stop27h 08mUnited Airlines
Deal found 5/9$953
Thu 7/410:19 amSTL - KEF
1 stop17h 11mUnited Airlines
Sun 7/1410:00 amKEF - STL
1 stop10h 21mUnited Airlines
Deal found 5/10$987
Thu 7/411:25 amSTL - KEF
2 stops14h 35mUnited Airlines
Sun 7/1410:00 amKEF - STL
1 stop10h 21mUnited Airlines
Deal found 5/10$991
Sat 5/118:05 amSTL - KEF
1 stop19h 25mUnited Airlines
Sat 5/1812:00 pmKEF - STL
1 stop10h 14mUnited Airlines
Deal found 5/10$1,072
Sat 5/1111:10 amSTL - KEF
2 stops16h 20mUnited Airlines
Sat 5/1812:00 pmKEF - STL
1 stop14h 49mUnited Airlines
Deal found 5/10$1,076

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

Find cheap flight options from St. Louis to Keflavik Intl specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,684,066 searches. Prices were last updated on May 11, 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 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Fri 6/144:00 pmKEF - STL
2 stops30h 28mMultiple Airlines
Deal found 5/9$656
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Fri 6/143:50 pmKEF - STL
3 stops30h 38mMultiple Airlines
Deal found 5/9$796
Sun 6/94:45 pmSTL - KEF
3 stops34h 50mMultiple Airlines
Sun 6/1610:00 amKEF - STL
3 stops35h 15mMultiple Airlines
Deal found 5/10$811
Sun 6/94:45 pmSTL - KEF
3 stops34h 50mMultiple Airlines
Sun 6/1610:00 amKEF - STL
3 stops35h 15mMultiple Airlines
Deal found 5/10$817
Sun 6/910:15 amSTL - KEF
1 stop17h 15mMultiple Airlines
Sun 6/1610:00 amKEF - STL
1 stop16h 05mMultiple Airlines
Deal found 5/10$931
Sun 6/99:50 amSTL - KEF
2 stops17h 45mAir Canada
Sun 6/1610:00 amKEF - STL
1 stop16h 05mAir Canada
Deal found 5/10$932
Sun 6/99:50 amSTL - KEF
2 stops17h 45mAir Canada
Sun 6/1610:00 amKEF - STL
2 stops34h 41mAir Canada
Deal found 5/10$936
Mon 6/1711:00 amSTL - KEF
1 stop16h 35mAir Canada
Mon 6/2410:00 amKEF - STL
2 stops15h 01mAir Canada
Deal found 5/10$938
Sun 6/95:31 pmSTL - KEF
1 stop9h 59mUnited Airlines
Sun 6/1612:00 pmKEF - STL
1 stop12h 42mUnited Airlines
Deal found 5/10$941

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 2,684,066 searches. Data last updated May 11, 2024.
These are some of the most attractive deals on flights from St. Louis to Reykjavik in 2024. Check back soon for alternative fares.
Sat 9/215:20 pmSTL - KEF
2 stops34h 15mAir Canada
Sun 9/2910:00 amKEF - STL
1 stop10h 20mAir Canada
Deal found 5/9$641
Sat 9/215:20 pmSTL - KEF
2 stops32h 40mMultiple Airlines
Sun 9/2910:00 amKEF - STL
2 stops34h 20mMultiple Airlines
Deal found 5/9$646
Sat 9/215:20 pmSTL - KEF
3 stops32h 40mMultiple Airlines
Sun 9/2910:00 amKEF - STL
2 stops40h 05mMultiple Airlines
Deal found 5/9$651
Fri 6/76:10 pmSTL - KEF
2 stops29h 35mMultiple Airlines
Fri 6/144:00 pmKEF - STL
2 stops30h 28mMultiple Airlines
Deal found 5/9$656
Mon 10/148:05 amSTL - KEF
2 stops17h 55mUnited Airlines
Mon 10/2111:00 amKEF - STL
2 stops32h 48mUnited Airlines
Deal found 5/10$657
Mon 10/1410:10 amSTL - KEF
1 stop15h 10mDelta
Mon 10/218:50 amKEF - STL
2 stops29h 01mDelta
Deal found 5/10$665
Sat 9/218:05 amSTL - KEF
1 stop19h 25mMultiple Airlines
Sun 9/2910:00 amKEF - STL
1 stop10h 20mMultiple Airlines
Deal found 5/9$697
Mon 10/146:45 amSTL - KEF
1 stop18h 35mDelta
Mon 10/218:50 amKEF - STL
1 stop16h 41mDelta
Deal found 5/10$710
Fri 9/65:20 pmSTL - KEF
1 stop10h 10mMultiple Airlines
Sun 9/1510:00 amKEF - STL
1 stop16h 05mMultiple Airlines
Deal found 5/10$711

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 2,684,066 searches. Data last updated May 11, 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.
Sat 5/118:05 amSTL - KEF
1 stop19h 25mUnited Airlines
Sat 5/1812:00 pmKEF - STL
1 stop10h 14mUnited Airlines
Deal found 5/10$1,072
Sat 5/1111:10 amSTL - KEF
2 stops16h 20mUnited Airlines
Sat 5/1812:00 pmKEF - STL
1 stop14h 49mUnited Airlines
Deal found 5/10$1,076
Sat 5/114:05 pmSTL - KEF
2 stops26h 25mMultiple Airlines
Sat 5/183:05 pmKEF - STL
3 stops31h 24mMultiple Airlines
Deal found 5/10$1,171
Thu 5/239:05 amSTL - KEF
2 stops16h 55mUnited Airlines
Thu 5/3012:00 pmKEF - STL
1 stop10h 12mUnited Airlines
Deal found 5/10$1,216
Thu 5/236:30 amSTL - KEF
1 stop18h 50mDelta
Thu 5/309:30 amKEF - STL
1 stop17h 22mDelta
Deal found 5/10$1,232
Sat 5/114:05 pmSTL - KEF
2 stops50h 25mMultiple Airlines
Fri 5/1712:10 amKEF - STL
2 stops25h 55mMultiple Airlines
Deal found 5/10$1,234
Sat 5/1112:10 pmSTL - KEF
3 stops15h 30mMultiple Airlines
Sat 5/189:35 amKEF - STL
3 stops30h 55mMultiple Airlines
Deal found 5/10$1,440
Thu 5/235:31 pmSTL - KEF
2 stops24h 59mLufthansa
Wed 5/2912:25 amKEF - STL
2 stops20h 16mLufthansa
Deal found 5/10$1,673
Sat 5/112:35 pmSTL - KEF
1 stop13h 40mMultiple Airlines
Fri 5/1712:25 amKEF - STL
2 stops25h 40mMultiple Airlines
Deal found 5/10$2,227

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 2,684,066 searches. Data last updated May 11, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$641 - $1,097

Route

Depart

Return

Price

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sat 9/21

2 stops34h 15m

Reykjavik Keflavik Intl

Sun 9/29

1 stop10h 20m

$641

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sat 9/21

2 stops32h 40m

Reykjavik Keflavik Intl

Sun 9/29

2 stops34h 20m

$646

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sat 9/21

3 stops32h 40m

Reykjavik Keflavik Intl

Sun 9/29

2 stops40h 05m

$651

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Mon 10/14

2 stops17h 55m

Reykjavik Keflavik Intl

Mon 10/21

2 stops32h 48m

$657

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Mon 10/14

1 stop15h 10m

Reykjavik Keflavik Intl

Mon 10/21

2 stops29h 01m

$665

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Mon 10/14

1 stop18h 35m

Reykjavik Keflavik Intl

Mon 10/21

1 stop16h 41m

$710

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Wed 8/7

2 stops16h 39m

Reykjavik Keflavik Intl

Wed 8/14

2 stops17h 14m

$770

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Sat 9/21

2 stops30h 05m

Reykjavik Keflavik Intl

Sat 9/28

2 stops27h 50m

$1,033

Lambert-St LouisReykjavik Keflavik Intl

STL - KEF

STLKEF

Lambert-St Louis

Fri 9/6

1 stop10h 10m

Reykjavik Keflavik Intl

Sat 9/14

1 stop18h 05m

$1,097

Flights are sorted by cheapest first

Deals found on 5/9

When is the cheapest time 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 5, 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. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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Average price of flights to Keflavik Intl by month

Plan your trip from St. Louis to Keflavik Intl by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Keflavik Intl is currently $0 while a round-trip flight costs $763. Price data was last updated on May 5, 2024.

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 $733). 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.

January

$339

February

$392

March

$460

April

$520

May

$536

June

$683

July

$733

August

$670

September

$694

October

$492

November

$416

December

$413

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 May 11, 2024.
To help decide which airline to fly from St. Louis to Reykjavik, see what other customers have to say about Air Canada, United Airlines and Delta. 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
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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
10,768 reviews
Delta
8.0
Very good
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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.

KLM
7.9
Good
1,589 reviews
Delta
8.0
Very good
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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.

Finnair
7.8
Good
1,377 reviews
Delta
8.0
Very good
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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
1,062 reviews
Delta
8.0
Very good
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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
11,014 reviews
Delta
8.0
Very good
10,768 reviews
Check prices

Crew

8.6

Food

7.4

Comfort

7.9

Boarding

8.2

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 $700 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Reykjavik Keflavik Intl Airport for under $700. The cheapest flight booked recently is on Air Canada for just $641, but on average you can expect to pay $716.

  • Are there last-minute flights available from St. Louis to Reykjavik Keflavik Intl Airport for under $1,100?

    There are currently 11+ open flights from St. Louis to Reykjavik Keflavik Intl Airport within the next 7 days for less than $1,100.

  • 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 $641 on this airline. Additional options worth looking into are United Airlines and Delta, starting at $657 and $665 round-trip. Air Canada is 43% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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 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 5/10.

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 2,684,066 searches. Data last updated May 11, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$690Average$1,055FlexibilityNo cancel feeOn-time67%
Search Air Canada flights
British AirwaysCheapest$695Average$757FlexibilityNo cancel feeOn-time70%
Search British Airways flights
DeltaCheapest$722Average$993FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$813Average$1,176FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
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