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

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Frontier Airlines Flight 45 Route Deals From $153

The cheapest prices found with in the last 7 days for return flights were $150 and $153 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Wed, Jan 28 - Mon, Feb 2
CUN
Cancun Intl.
ORD
O'Hare Intl.
$150 Roundtrip, found 4 days ago
$150
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Jan 28 from Cancun Intl. to O'Hare Intl., returning Mon, Feb 2, priced at $150 found 4 days ago
Thu, Feb 12 - Mon, Feb 16
CUN
Cancun Intl.
ORD
O'Hare Intl.
$153 Roundtrip, found 2 days ago
$153
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Feb 12 from Cancun Intl. to O'Hare Intl., returning Mon, Feb 16, priced at $153 found 2 days ago
Thu, Mar 5 - Tue, Mar 10
CUN
Cancun Intl.
ORD
O'Hare Intl.
$161 Roundtrip, found 2 days ago
$161
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Mar 5 from Cancun Intl. to O'Hare Intl., returning Tue, Mar 10, priced at $161 found 2 days ago
Fri, Jan 30 - Tue, Feb 3
CUN
Cancun Intl.
ORD
O'Hare Intl.
$170 Roundtrip, found 3 days ago
$170
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Jan 30 from Cancun Intl. to O'Hare Intl., returning Tue, Feb 3, priced at $170 found 3 days ago
Fri, Mar 6 - Tue, Mar 10
CUN
Cancun Intl.
ORD
O'Hare Intl.
$186 Roundtrip, found 2 days ago
$186
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Cancun Intl. to O'Hare Intl., returning Tue, Mar 10, priced at $186 found 2 days ago
Thu, Jan 29 - Wed, Feb 4
CUN
Cancun Intl.
ORD
O'Hare Intl.
$203 Roundtrip, found 2 days ago
$203
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jan 29 from Cancun Intl. to O'Hare Intl., returning Wed, Feb 4, priced at $203 found 2 days ago
Thu, Jan 29 - Wed, Feb 4
CUN
Cancun Intl.
ORD
O'Hare Intl.
$208 Roundtrip, found 2 days ago
$208
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Jan 29 from Cancun Intl. to O'Hare Intl., returning Wed, Feb 4, priced at $208 found 2 days ago
Tue, Feb 3 - Sat, Feb 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Feb 3 from Cancun Intl. to O'Hare Intl., returning Sat, Feb 7, priced at $213 found 2 days ago
Thu, Feb 19 - Mon, Feb 23
CUN
Cancun Intl.
ORD
O'Hare Intl.
$221 Roundtrip, found 4 days ago
$221
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Feb 19 from Cancun Intl. to O'Hare Intl., returning Mon, Feb 23, priced at $221 found 4 days ago
Wed, Mar 4 - Mon, Mar 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$226 Roundtrip, found 5 days ago
$226
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Cancun Intl. to O'Hare Intl., returning Mon, Mar 9, priced at $226 found 5 days ago
Thu, Feb 26 - Wed, Mar 4
CUN
Cancun Intl.
ORD
O'Hare Intl.
$227 Roundtrip, found 2 days ago
$227
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Cancun Intl. to O'Hare Intl., returning Wed, Mar 4, priced at $227 found 2 days ago
Thu, Feb 26 - Wed, Mar 4
CUN
Cancun Intl.
ORD
O'Hare Intl.
$230 Roundtrip, found 2 days ago
$230
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Feb 26 from Cancun Intl. to O'Hare Intl., returning Wed, Mar 4, priced at $230 found 2 days 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.