Compare live prices for STL to CUN. Use the search panel
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STL → CUNApprox. 1997.63 km11 May 2026Live inventory
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Showing 25
of 138
live flights
Southwest Airlines
WN-1995
11:10
05/11/2026
STL
St Louis Lambert International Airport
3h 0m
Non-stop
14:10
05/11/2026
CUN
Cancún International Airport
₹17,599
per person
✕ Non-refundable10 fare options
Aeromexico
AM-4406
06:00
05/11/2026
STL
St Louis Lambert International Airport
14h 16m
1 Stop
⏱ ATL · 10h 3mATL Airport
20:16
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Aeromexico
AM-4189
10:49
05/11/2026
STL
St Louis Lambert International Airport
9h 27m
1 Stop
⏱ ATL · 5h 23mATL Airport
20:16
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Aeromexico
AM-4406
06:00
05/11/2026
STL
St Louis Lambert International Airport
5h 35m
1 Stop
⏱ ATL · 1h 13mATL Airport
11:35
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Aeromexico
AM-4454
13:27
05/11/2026
STL
St Louis Lambert International Airport
6h 49m
1 Stop
⏱ ATL · 2h 43mATL Airport
20:16
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Aeromexico
AM-4567
09:15
05/11/2026
STL
St Louis Lambert International Airport
11h 1m
1 Stop
⏱ ATL · 6h 55mATL Airport
20:16
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Aeromexico
AM-5529
07:05
05/11/2026
STL
St Louis Lambert International Airport
13h 11m
1 Stop
⏱ ATL · 9h 6mATL Airport
20:16
05/11/2026
CUN
Cancún International Airport
₹17,898
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-397
07:20
05/11/2026
STL
St Louis Lambert International Airport
5h 50m
1 Stop
⏱ MDW · 1h 5mMDW Airport
13:10
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4489
05:40
05/11/2026
STL
St Louis Lambert International Airport
7h 30m
1 Stop
⏱ MDW · 2h 45mMDW Airport
13:10
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-417
05:00
05/11/2026
STL
St Louis Lambert International Airport
7h 20m
1 Stop
⏱ MCO · 2h 55mMCO Airport
12:20
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4466
05:40
05/11/2026
STL
St Louis Lambert International Airport
6h 5m
1 Stop
⏱ HOU · 1h 50mHOU Airport
11:45
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4467
08:25
05/11/2026
STL
St Louis Lambert International Airport
6h 55m
1 Stop
⏱ HOU · 2h 35mHOU Airport
15:20
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4668
07:30
05/11/2026
STL
St Louis Lambert International Airport
6h 30m
1 Stop
⏱ BNA · 2h 30mBNA Airport
14:00
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4440
05:00
05/11/2026
STL
St Louis Lambert International Airport
7h 5m
1 Stop
⏱ BWI · 1h 20mBWI Airport
12:05
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable6 fare options
Southwest Airlines
WN-4454
06:20
05/11/2026
STL
St Louis Lambert International Airport
9h 20m
1 Stop
⏱ DEN · 3h 10mDEN Airport
15:40
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable🔥 Last 2 seats6 fare options
Southwest Airlines
WN-4466
05:40
05/11/2026
STL
St Louis Lambert International Airport
7h 40m
1 Stop
⏱ HOU · 3h 20mHOU Airport
13:20
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-4466
05:40
05/11/2026
STL
St Louis Lambert International Airport
9h 40m
1 Stop
⏱ HOU · 5h 20mHOU Airport
15:20
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-4440
05:00
05/11/2026
STL
St Louis Lambert International Airport
10h 5m
1 Stop
⏱ BWI · 4h 20mBWI Airport
15:05
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-2013
06:05
05/11/2026
STL
St Louis Lambert International Airport
8h 40m
1 Stop
⏱ PHX · 1h 25mPHX Airport
14:45
05/11/2026
CUN
Cancún International Airport
₹18,201
per person
✕ Non-refundable5 fare options
Frontier Airlines
F9-86
06:00
05/11/2026
STL
St Louis Lambert International Airport
3h 15m
Non-stop
09:15
05/11/2026
CUN
Cancún International Airport
₹19,361
per person
✕ Non-refundable
Southwest Airlines
WN-3793
19:40
05/11/2026
STL
St Louis Lambert International Airport
16h 40m
1 Stop
⏱ MCO · 12h 20mMCO Airport
12:20
05/12/2026
+1
CUN
Cancún International Airport
₹19,628
per person
✕ Non-refundable5 fare options
Southwest Airlines
WN-3816
15:25
05/11/2026
STL
St Louis Lambert International Airport
20h 55m
1 Stop
⏱ MCO · 16h 30mMCO Airport
12:20
05/12/2026
+1
CUN
Cancún International Airport
₹19,628
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-5047
14:20
05/11/2026
STL
St Louis Lambert International Airport
22h 0m
1 Stop
⏱ MCO · 17h 40mMCO Airport
12:20
05/12/2026
+1
CUN
Cancún International Airport
₹19,628
per person
✕ Non-refundable4 fare options
Southwest Airlines
WN-4487
17:30
05/11/2026
STL
St Louis Lambert International Airport
18h 50m
1 Stop
⏱ MCO · 14h 25mMCO Airport
12:20
05/12/2026
+1
CUN
Cancún International Airport
₹19,628
per person
✕ Non-refundable4 fare options
aircanada
AC-1564
13:05
05/11/2026
STL
St Louis Lambert International Airport
23h 5m
1 Stop
⏱ YUL · 16h 0mYUL Airport
12:10
05/12/2026
+1
CUN
Cancún International Airport
₹19,883
per person
✕ Non-refundable12 fare options
😕 No flights match your filters.
St. Louis (STL)
📍 St Louis Lambert International Airport
🌍 United States
🕐 GMT -6
📐 Latitude: 38.748697
📐 Longitude: -90.370003
Cancun (CUN)
📍 Cancún International Airport
🌍 Mexico
🕐 GMT -5
📐 Latitude: 21.036500930800003
📐 Longitude: -86.8770980835
✈ Distance: St. Louis,USA to Cancun,Mexico — 1997.63 km
📅 Results on this page are loaded for 11 May 2026. Click View all flights for the complete live search.
St. Louis to Cancun — what to expect when booking
The STL–CUN route is served by multiple carriers throughout the year.
Fares on this route can move quickly — a price available now may not be there 30 minutes later.
If your dates are flexible, try shifting your departure by a day or two using the date strip above.
Mid-week departures often show lower base fares compared to weekend starts on many routes.
The distance between St. Louis,USA and Cancun,Mexico is approximately
1997.63 km.
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❓ Frequently asked questions — St. Louis to Cancun flights
Generally yes — fares on most routes are most competitive around 4–6 weeks before departure. Booking earlier usually means better availability and a lower base fare when your dates are fixed.
The straight-line distance between St. Louis,USA (STL) and Cancun,Mexico (CUN) is approximately 1997.63 km. Actual flying distance may vary slightly depending on routing.
Non-stop availability on this route varies by airline schedule and season. Use the filters below to quickly check whether direct options are available on your selected date.
Mid-week departures often show lower prices than weekend travel on many routes. Use the date strip above to compare nearby days quickly.