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, Feb 1 - Mon, Feb 9
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$196 Roundtrip, just found
$196
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, Feb 1 from Philadelphia Intl. to Cancun Intl., returning Mon, Feb 9, priced at $196 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
Wed, Feb 25 - Wed, Mar 4
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$206 Roundtrip, found 9 hours ago
$206
Roundtrip
found 9 hours ago
Select Frontier Airlines flight, departing Wed, Feb 25 from Philadelphia Intl. to Cancun Intl., returning Wed, Mar 4, priced at $206 found 9 hours ago
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
Wed, Jan 7 - Tue, Jan 13
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$216 Roundtrip, found 12 hours ago
$216
Roundtrip
found 12 hours ago
Select Frontier Airlines flight, departing Wed, Jan 7 from Philadelphia Intl. to Cancun Intl., returning Tue, Jan 13, priced at $216 found 12 hours ago
Wed, Dec 31 - Tue, Jan 6
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$222 Roundtrip, just found
$222
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Dec 31 from Philadelphia Intl. to Cancun Intl., returning Tue, Jan 6, priced at $222 just found
Sun, Jan 25 - Sat, Jan 31
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$226 Roundtrip, found 17 hours ago
$226
Roundtrip
found 17 hours ago
Select Frontier Airlines flight, departing Sun, Jan 25 from Philadelphia Intl. to Cancun Intl., returning Sat, Jan 31, priced at $226 found 17 hours ago
Sat, Jan 31 - Wed, Feb 4
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$227 Roundtrip, just found
$227
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Jan 31 from Philadelphia Intl. to Cancun Intl., returning Wed, Feb 4, priced at $227 just found
Mon, Feb 23 - Mon, Mar 2
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$227 Roundtrip, found 3 days ago
$227
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Mon, Feb 23 from Philadelphia Intl. to Cancun Intl., returning Mon, Mar 2, priced at $227 found 3 days ago
Mon, Mar 2 - Tue, Mar 3
PHL
Philadelphia Intl.
CUN
Cancun Intl.
$228 Roundtrip, found 6 days ago
$228
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Mon, Mar 2 from Philadelphia Intl. to Cancun Intl., returning Tue, Mar 3, priced at $228 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.