Frontier Airlines Flight 91 Deals & Information (2026/2027)

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Frontier Airlines Flight 91 Route Deals From $92

The cheapest prices found with in the last 7 days for return flights were $199 and $92 for one-way flights to Cancun Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun, Feb 8 - Fri, Feb 13
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$199 Roundtrip, found 10 hours ago
$199
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Sun, Feb 8 from Philadelphia Intl. to Cancun Intl., returning Fri, Feb 13, priced at $199 found 10 hours ago
Tue, Feb 17 - Thu, Feb 19
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$199 Roundtrip, found 1 hour ago
$199
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Tue, Feb 17 from Philadelphia Intl. to Cancun Intl., returning Thu, Feb 19, priced at $199 found 1 hour ago
Mon, Feb 23 - Thu, Feb 26
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$200 Roundtrip, found 6 hours ago
$200
Roundtrip
found 6 hours ago
Select Frontier Airlines flight, departing Mon, Feb 23 from Philadelphia Intl. to Cancun Intl., returning Thu, Feb 26, priced at $200 found 6 hours ago
Tue, Feb 10 - Sat, Feb 14
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$201 Roundtrip, found 9 hours ago
$201
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Tue, Feb 10 from Philadelphia Intl. to Cancun Intl., returning Sat, Feb 14, priced at $201 found 9 hours ago
Mon, Mar 2 - Wed, Mar 4
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$208 Roundtrip, found 15 hours ago
$208
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Mon, Mar 2 from Philadelphia Intl. to Cancun Intl., returning Wed, Mar 4, priced at $208 found 15 hours ago
Sun, Mar 1 - Wed, Mar 4
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$209 Roundtrip, found 15 hours ago
$209
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Sun, Mar 1 from Philadelphia Intl. to Cancun Intl., returning Wed, Mar 4, priced at $209 found 15 hours ago
Sat, Jan 24 - Thu, Feb 5
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$210 Roundtrip, found 4 days ago
$210
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, Jan 24 from Philadelphia Intl. to Cancun Intl., returning Thu, Feb 5, priced at $210 found 4 days ago
Wed, Mar 4 - Sat, Mar 21
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Philadelphia Intl. to Cancun Intl., returning Sat, Mar 21, priced at $220 found 3 days ago
Mon, Mar 23 - Thu, Mar 26
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$229 Roundtrip, found 7 hours ago
$229
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Mon, Mar 23 from Philadelphia Intl. to Cancun Intl., returning Thu, Mar 26, priced at $229 found 7 hours ago
Sun, Mar 22 - Mon, Mar 23
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$230 Roundtrip, found 6 days ago
$230
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Mar 22 from Philadelphia Intl. to Cancun Intl., returning Mon, Mar 23, priced at $230 found 6 days 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.