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

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Frontier Airlines Flight 45 Route Deals From $108

The cheapest prices found with in the last 7 days for return flights were $147 and $108 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, May 7 - Sun, May 10
CUN
Cancun Intl.
ORD
O'Hare Intl.
$147 Roundtrip, found 2 days ago
$147
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, May 7 from Cancun Intl. to O'Hare Intl., returning Sun, May 10, priced at $147 found 2 days ago
Fri, Mar 6 - Sat, Mar 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$168 Roundtrip, found 2 days ago
$168
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Cancun Intl. to O'Hare Intl., returning Sat, Mar 7, priced at $168 found 2 days ago
Wed, Mar 4 - Mon, Mar 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$169 Roundtrip, found 3 days ago
$169
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Cancun Intl. to O'Hare Intl., returning Mon, Mar 9, priced at $169 found 3 days ago
Tue, Jun 2 - Tue, Jun 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$176 Roundtrip, found 2 days ago
$176
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Tue, Jun 2 from Cancun Intl. to O'Hare Intl., returning Tue, Jun 9, priced at $176 found 2 days ago
Fri, Mar 13 - Tue, Mar 17
CUN
Cancun Intl.
ORD
O'Hare Intl.
$181 Roundtrip, found 2 days ago
$181
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Fri, Mar 13 from Cancun Intl. to O'Hare Intl., returning Tue, Mar 17, priced at $181 found 2 days ago
Wed, Mar 18 - Tue, Mar 24
CUN
Cancun Intl.
ORD
O'Hare Intl.
$217 Roundtrip, found 4 days ago
$217
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Mar 18 from Cancun Intl. to O'Hare Intl., returning Tue, Mar 24, priced at $217 found 4 days ago
Thu, May 7 - Sun, May 10
CUN
Cancun Intl.
ORD
O'Hare Intl.
$219 Roundtrip, found 2 days ago
$219
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, May 7 from Cancun Intl. to O'Hare Intl., returning Sun, May 10, priced at $219 found 2 days ago
Wed, Jun 3 - Sun, Jun 7
CUN
Cancun Intl.
ORD
O'Hare Intl.
$220 Roundtrip, found 3 days ago
$220
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Jun 3 from Cancun Intl. to O'Hare Intl., returning Sun, Jun 7, priced at $220 found 3 days ago
Wed, Mar 4 - Mon, Mar 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Cancun Intl. to O'Hare Intl., returning Mon, Mar 9, priced at $224 found 3 days ago
Thu, Apr 16 - Wed, Apr 22
CUN
Cancun Intl.
ORD
O'Hare Intl.
$225 Roundtrip, found 2 days ago
$225
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Apr 16 from Cancun Intl. to O'Hare Intl., returning Wed, Apr 22, priced at $225 found 2 days ago
Wed, Mar 4 - Sun, Mar 8
CUN
Cancun Intl.
ORD
O'Hare Intl.
$229 Roundtrip, found 4 days ago
$229
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Mar 4 from Cancun Intl. to O'Hare Intl., returning Sun, Mar 8, priced at $229 found 4 days ago
Fri, Mar 6 - Mon, Mar 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$231 Roundtrip, found 3 days ago
$231
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Mar 6 from Cancun Intl. to O'Hare Intl., returning Mon, Mar 9, priced at $231 found 3 days ago
Wed, Jul 29 - Mon, Aug 3
CUN
Cancun Intl.
ORD
O'Hare Intl.
$233 Roundtrip, found 2 days ago
$233
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, Jul 29 from Cancun Intl. to O'Hare Intl., returning Mon, Aug 3, priced at $233 found 2 days ago
Mon, May 4 - Fri, May 8
CUN
Cancun Intl.
ORD
O'Hare Intl.
$235 Roundtrip, found 4 days ago
$235
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Mon, May 4 from Cancun Intl. to O'Hare Intl., returning Fri, May 8, priced at $235 found 4 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.