Frontier Airlines Flight 87 Deals & Information (2026/2027)

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Frontier Airlines Flight 87 Route Deals From $137

The cheapest prices found with in the last 7 days for return flights were $264 and $137 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, May 1 - Mon, May 4
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$264 Roundtrip, found 5 hours ago
$264
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, May 1 from Cancun Intl. to Lambert-St. Louis Intl., returning Mon, May 4, priced at $264 found 5 hours ago
Fri, May 1 - Mon, May 4
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$271 Roundtrip, found 5 hours ago
$271
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Fri, May 1 from Cancun Intl. to Lambert-St. Louis Intl., returning Mon, May 4, priced at $271 found 5 hours ago
Tue, May 12 - Sun, May 17
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$278 Roundtrip, found 4 hours ago
$278
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, May 12 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, May 17, priced at $278 found 4 hours ago
Thu, Apr 30 - Sun, May 3
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$279 Roundtrip, found 3 days ago
$279
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, May 3, priced at $279 found 3 days ago
Fri, Apr 24 - Sun, Apr 26
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$289 Roundtrip, found 4 days ago
$289
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Fri, Apr 24 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, Apr 26, priced at $289 found 4 days ago
Tue, May 5 - Fri, May 8
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$293 Roundtrip, found 2 days ago
$293
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, May 5 from Cancun Intl. to Lambert-St. Louis Intl., returning Fri, May 8, priced at $293 found 2 days ago
Sat, Apr 18 - Fri, Apr 24
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$294 Roundtrip, found 4 days ago
$294
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Cancun Intl. to Lambert-St. Louis Intl., returning Fri, Apr 24, priced at $294 found 4 days ago
Sat, Apr 18 - Fri, Apr 24
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$301 Roundtrip, found 4 days ago
$301
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Apr 18 from Cancun Intl. to Lambert-St. Louis Intl., returning Fri, Apr 24, priced at $301 found 4 days ago
Tue, May 12 - Sun, May 17
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$312 Roundtrip, found 4 hours ago
$312
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Tue, May 12 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, May 17, priced at $312 found 4 hours ago
Thu, May 21 - Sun, May 24
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$325 Roundtrip, found 5 days ago
$325
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Thu, May 21 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, May 24, priced at $325 found 5 days ago

Frequently asked questions

What route does flight number F987 take?
F987 operates between CUN and STL directly. This journey typically takes 3 hours and 30 minutes.
How often is F987 on time?
If you're flying on Frontier Airlines flight number F987 from Cancun Airport to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), 84% of these services touch down as scheduled. On the rare occasion that there is a delay, expect a wait time of around 28 minutes on average. Thanks to the carrier's high standard of service, this trip has a 2.8-star rating.
What terminal does F987 fly out of?
Passengers on flight number F987 from Cancun Airport to STL normally depart from Terminal 4.
What kind of plane is on flight number F987?
Expect to cruise aboard an Airbus A320 if you're traveling on flight F987. Nearly all services from Cancun Airport to Lambert Field operate using this kind of aircraft.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your F987 flight with Travelocity, please visit our Customer Service Portal.