Frontier Airlines Flight 91 Deals & Information (2025/2026)

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Frontier Airlines Flight 91 Route Deals From $90

The cheapest prices found with in the last 7 days for return flights were $196 and $90 for one-way flights to Cancun Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Mar 1 - Thu, Mar 5
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$196 Roundtrip, just found
$196
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Mar 1 from Philadelphia Intl. to Cancun Intl., returning Thu, Mar 5, priced at $196 just found
Thu, Feb 19 - Mon, Feb 23
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$198 Roundtrip, just found
$198
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Feb 19 from Philadelphia Intl. to Cancun Intl., returning Mon, Feb 23, priced at $198 just found
Tue, Jan 6 - Tue, Jan 13
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$204 Roundtrip, found 2 days ago
$204
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jan 6 from Philadelphia Intl. to Cancun Intl., returning Tue, Jan 13, priced at $204 found 2 days ago
Sun, Feb 22 - Wed, Feb 25
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$206 Roundtrip, just found
$206
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Feb 22 from Philadelphia Intl. to Cancun Intl., returning Wed, Feb 25, priced at $206 just found
Wed, Feb 18 - Wed, Feb 25
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$207 Roundtrip, just found
$207
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Feb 18 from Philadelphia Intl. to Cancun Intl., returning Wed, Feb 25, priced at $207 just found
Wed, Feb 18 - Sat, Feb 28
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$208 Roundtrip, just found
$208
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Feb 18 from Philadelphia Intl. to Cancun Intl., returning Sat, Feb 28, priced at $208 just found
Tue, Feb 17 - Thu, Mar 5
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$215 Roundtrip, found 2 days ago
$215
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Feb 17 from Philadelphia Intl. to Cancun Intl., returning Thu, Mar 5, priced at $215 found 2 days ago
Sun, Jan 11 - Tue, Jan 13
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$216 Roundtrip, just found
$216
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Jan 11 from Philadelphia Intl. to Cancun Intl., returning Tue, Jan 13, priced at $216 just found
Sun, Jan 25 - Sat, Jan 31
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$226 Roundtrip, found 4 hours ago
$226
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sun, Jan 25 from Philadelphia Intl. to Cancun Intl., returning Sat, Jan 31, priced at $226 found 4 hours ago
Mon, Mar 23 - Mon, Mar 30
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$226 Roundtrip, found 1 hour ago
$226
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Mon, Mar 23 from Philadelphia Intl. to Cancun Intl., returning Mon, Mar 30, priced at $226 found 1 hour ago

Frequently asked questions

What route does flight number F991 take?
Flight number F991 operates directly from Philadelphia Airport to Cancun Intl. Airport (CUN). During this trip, expect to be in the air for about 4 hours. It's wise to book ahead to secure your preferred seat.
What terminal does F991 fly out of?
You'll likely be jetting out of Terminal E if you're flying on F991 direct from Philadelphia Intl. Airport (PHL) to Cancun Airport.
What kind of plane is on flight number F991?
There's every chance you'll find yourself jumping on board an Airbus A320 if you're traveling on flight number F991. Generally, this flight departs from Philadelphia Airport and comes in to land at Cancun Airport.
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 F991 flight with Travelocity, please visit our Customer Service Portal.