Frontier Airlines Flight WN87 Deals & Information (2025/2026)

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Frontier Airlines Flight 87 Route Deals From $161

The cheapest prices found with in the last 7 days for return flights were $314 and $161 for one-way flights to Lambert-St. Louis Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Sep 14 - Sun, Sep 21
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$314 Roundtrip, found 13 hours ago
$314
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Sun, Sep 14 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, Sep 21, priced at $314 found 13 hours ago
Sun, Sep 7 - Sun, Sep 14
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$323 Roundtrip, found 2 days ago
$323
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Sun, Sep 7 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, Sep 14, priced at $323 found 2 days ago
Thu, Sep 25 - Wed, Oct 1
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$328 Roundtrip, found 4 days ago
$328
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Sep 25 from Cancun Intl. to Lambert-St. Louis Intl., returning Wed, Oct 1, priced at $328 found 4 days ago
Thu, Aug 14 - Mon, Aug 18
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$334 Roundtrip, found 6 hours ago
$334
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Thu, Aug 14 from Cancun Intl. to Lambert-St. Louis Intl., returning Mon, Aug 18, priced at $334 found 6 hours ago
Thu, Aug 14 - Sat, Aug 23
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$338 Roundtrip, found 6 days ago
$338
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Aug 14 from Cancun Intl. to Lambert-St. Louis Intl., returning Sat, Aug 23, priced at $338 found 6 days ago
Fri, Sep 12 - Sun, Sep 14
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$342 Roundtrip, found 18 hours ago
$342
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Fri, Sep 12 from Cancun Intl. to Lambert-St. Louis Intl., returning Sun, Sep 14, priced at $342 found 18 hours ago
Mon, Aug 25 - Wed, Sep 3
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$343 Roundtrip, found 5 days ago
$343
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Mon, Aug 25 from Cancun Intl. to Lambert-St. Louis Intl., returning Wed, Sep 3, priced at $343 found 5 days ago
Thu, Aug 14 - Mon, Aug 18
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$345 Roundtrip, found 6 hours ago
$345
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Thu, Aug 14 from Cancun Intl. to Lambert-St. Louis Intl., returning Mon, Aug 18, priced at $345 found 6 hours ago
Sat, Sep 20 - Sat, Sep 27
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$348 Roundtrip, found 6 hours ago
$348
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Sat, Sep 20 from Cancun Intl. to Lambert-St. Louis Intl., returning Sat, Sep 27, priced at $348 found 6 hours ago
Thu, Aug 14 - Sat, Aug 23
CUN
Cancun Intl.
STL
Lambert-St. Louis Intl.
$350 Roundtrip, found 6 days ago
$350
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, Aug 14 from Cancun Intl. to Lambert-St. Louis Intl., returning Sat, Aug 23, priced at $350 found 6 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.