Frontier Airlines Flight 45 Deals & Information (2026/2027)

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Frontier Airlines Flight 45 Route Deals From $130

The cheapest prices found with in the last 7 days for return flights were $262 and $130 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, May 13 - Tue, May 19
CUN
Cancun Intl.
ORD
O'Hare Intl.
$262 Roundtrip, found 10 hours ago
$262
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Wed, May 13 from Cancun Intl. to O'Hare Intl., returning Tue, May 19, priced at $262 found 10 hours ago
Sat, May 16 - Tue, May 26
CUN
Cancun Intl.
ORD
O'Hare Intl.
$282 Roundtrip, found 6 days ago
$282
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sat, May 16 from Cancun Intl. to O'Hare Intl., returning Tue, May 26, priced at $282 found 6 days ago
Wed, Jul 15 - Fri, Aug 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$288 Roundtrip, found 14 hours ago
$288
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Jul 15 from Cancun Intl. to O'Hare Intl., returning Fri, Aug 7, priced at $288 found 14 hours ago
Fri, Jul 24 - Fri, Jul 31
CUN
Cancun Intl.
ORD
O'Hare Intl.
$301 Roundtrip, found 1 day ago
$301
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Jul 24 from Cancun Intl. to O'Hare Intl., returning Fri, Jul 31, priced at $301 found 1 day ago
Thu, May 28 - Mon, Jun 1
CUN
Cancun Intl.
ORD
O'Hare Intl.
$303 Roundtrip, found 18 hours ago
$303
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Thu, May 28 from Cancun Intl. to O'Hare Intl., returning Mon, Jun 1, priced at $303 found 18 hours ago
Sat, Jul 18 - Tue, Jul 21
CUN
Cancun Intl.
ORD
O'Hare Intl.
$305 Roundtrip, found 15 hours ago
$305
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Sat, Jul 18 from Cancun Intl. to O'Hare Intl., returning Tue, Jul 21, priced at $305 found 15 hours ago
Fri, May 22 - Thu, May 28
CUN
Cancun Intl.
ORD
O'Hare Intl.
$306 Roundtrip, found 15 hours ago
$306
Roundtrip
found 15 hours ago
Select Frontier Airlines flight, departing Fri, May 22 from Cancun Intl. to O'Hare Intl., returning Thu, May 28, priced at $306 found 15 hours ago
Wed, Jul 15 - Fri, Aug 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$314 Roundtrip, found 14 hours ago
$314
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Jul 15 from Cancun Intl. to O'Hare Intl., returning Fri, Aug 7, priced at $314 found 14 hours ago
Wed, Jul 15 - Fri, Aug 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$319 Roundtrip, found 14 hours ago
$319
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Wed, Jul 15 from Cancun Intl. to O'Hare Intl., returning Fri, Aug 7, priced at $319 found 14 hours ago
Tue, May 12 - Wed, May 27
CUN
Cancun Intl.
ORD
O'Hare Intl.
$321 Roundtrip, found 1 day ago
$321
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Tue, May 12 from Cancun Intl. to O'Hare Intl., returning Wed, May 27, priced at $321 found 1 day ago

Frequently asked questions

What route does flight number F945 take?
You'll be landing at Chicago, IL Airport (ORD-O'Hare Intl.) from Cancun Airport if you've booked a ticket on flight number F945. You'll be in the air for 4 hours during this trip. What's more, the flight conveniently travels non-stop.
How often is F945 on time?
Approximately 83% of F945 flights arrive on time — so if you'll be up in the air between Cancun, Quintana Roo Airport (CUN-Cancun Intl.) and O'Hare Intl. Airport (ORD), you can relax in confidence knowing that you will reach your destination ASAP. On the rare occasion that this Frontier Airlines flight encounters a delay, you can expect a wait time of roughly 29 minutes. Thanks to the airline's top-notch service, this route has a star rating of 2.2.
What terminal does F945 fly out of?
You'll likely be taking off from Terminal 4 if you're traveling on flight number F945 direct from CUN to Chicago, IL Airport (ORD-O'Hare Intl.).
What kind of plane is on flight number F945?
The route for flight number F945 is almost always Cancun Airport to O'Hare Intl. Airport (ORD), and the Airbus A320 is the type of plane you'll probably be taking off on.
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 F945 flight with Travelocity, please visit our Customer Service Portal.