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

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Frontier Airlines Flight 45 Route Deals From $146

The cheapest prices found with in the last 7 days for return flights were $145 and $146 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, May 5 - Wed, May 6
CUN
Cancun Intl.
ORD
O'Hare Intl.
$145 Roundtrip, found 3 days ago
$145
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, May 5 from Cancun Intl. to O'Hare Intl., returning Wed, May 6, priced at $145 found 3 days ago
Thu, May 7 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$172 Roundtrip, found 4 days ago
$172
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, May 7 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $172 found 4 days ago
Wed, May 13 - Tue, May 19
CUN
Cancun Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 2 days ago
$213
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Wed, May 13 from Cancun Intl. to O'Hare Intl., returning Tue, May 19, priced at $213 found 2 days ago
Wed, Apr 29 - Tue, May 5
CUN
Cancun Intl.
ORD
O'Hare Intl.
$215 Roundtrip, found 4 days ago
$215
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, Apr 29 from Cancun Intl. to O'Hare Intl., returning Tue, May 5, priced at $215 found 4 days ago
Thu, May 7 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$224 Roundtrip, found 4 days ago
$224
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, May 7 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $224 found 4 days ago
Tue, May 5 - Wed, May 6
CUN
Cancun Intl.
ORD
O'Hare Intl.
$224 Roundtrip, found 3 days ago
$224
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, May 5 from Cancun Intl. to O'Hare Intl., returning Wed, May 6, priced at $224 found 3 days ago
Thu, May 28 - Tue, Jun 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$229 Roundtrip, found 4 days ago
$229
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, May 28 from Cancun Intl. to O'Hare Intl., returning Tue, Jun 9, priced at $229 found 4 days ago
Fri, Apr 24 - Sat, May 2
CUN
Cancun Intl.
ORD
O'Hare Intl.
$230 Roundtrip, found 3 days ago
$230
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, Apr 24 from Cancun Intl. to O'Hare Intl., returning Sat, May 2, priced at $230 found 3 days ago
Tue, May 12 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$239 Roundtrip, found 3 days ago
$239
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, May 12 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $239 found 3 days ago
Wed, May 6 - Sat, May 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$247 Roundtrip, found 4 days ago
$247
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, May 6 from Cancun Intl. to O'Hare Intl., returning Sat, May 9, priced at $247 found 4 days ago
Fri, May 22 - Sun, May 24
CUN
Cancun Intl.
ORD
O'Hare Intl.
$252 Roundtrip, found 3 days ago
$252
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Fri, May 22 from Cancun Intl. to O'Hare Intl., returning Sun, May 24, priced at $252 found 3 days ago
Wed, May 6 - Sat, May 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$254 Roundtrip, found 4 days ago
$254
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Wed, May 6 from Cancun Intl. to O'Hare Intl., returning Sat, May 9, priced at $254 found 4 days ago
Wed, Jul 15 - Sun, Jul 26
CUN
Cancun Intl.
ORD
O'Hare Intl.
$266 Roundtrip, found 3 days ago
$266
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Wed, Jul 15 from Cancun Intl. to O'Hare Intl., returning Sun, Jul 26, priced at $266 found 3 days ago
Sun, May 10 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$269 Roundtrip, found 4 days ago
$269
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, May 10 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $269 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.