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

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Frontier Airlines Flight 45 Route Deals From $197

The cheapest prices found with in the last 7 days for return flights were $193 and $197 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, May 16 - Mon, May 25
CUN
Cancun Intl.
ORD
O'Hare Intl.
$193 Roundtrip, found 5 days ago
$193
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, May 16 from Cancun Intl. to O'Hare Intl., returning Mon, May 25, priced at $193 found 5 days ago
Sun, May 10 - Sun, May 17
CUN
Cancun Intl.
ORD
O'Hare Intl.
$196 Roundtrip, found 5 days ago
$196
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sun, May 10 from Cancun Intl. to O'Hare Intl., returning Sun, May 17, priced at $196 found 5 days ago
Sat, May 9 - Sun, May 17
CUN
Cancun Intl.
ORD
O'Hare Intl.
$201 Roundtrip, found 4 days ago
$201
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sat, May 9 from Cancun Intl. to O'Hare Intl., returning Sun, May 17, priced at $201 found 4 days ago
Wed, May 6 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$202 Roundtrip, found 5 days ago
$202
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, May 6 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $202 found 5 days ago
Wed, May 6 - Fri, May 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$207 Roundtrip, found 5 days ago
$207
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Wed, May 6 from Cancun Intl. to O'Hare Intl., returning Fri, May 15, priced at $207 found 5 days ago
Tue, May 12 - Tue, May 19
CUN
Cancun Intl.
ORD
O'Hare Intl.
$214 Roundtrip, found 5 days ago
$214
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Tue, May 12 from Cancun Intl. to O'Hare Intl., returning Tue, May 19, priced at $214 found 5 days ago
Thu, May 14 - Mon, May 18
CUN
Cancun Intl.
ORD
O'Hare Intl.
$215 Roundtrip, found 6 days ago
$215
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Thu, May 14 from Cancun Intl. to O'Hare Intl., returning Mon, May 18, priced at $215 found 6 days ago
Wed, May 6 - Sun, May 17
CUN
Cancun Intl.
ORD
O'Hare Intl.
$224 Roundtrip, found 6 days ago
$224
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Wed, May 6 from Cancun Intl. to O'Hare Intl., returning Sun, May 17, priced at $224 found 6 days ago
Sat, May 9 - Sat, May 16
CUN
Cancun Intl.
ORD
O'Hare Intl.
$228 Roundtrip, found 5 days ago
$228
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, May 9 from Cancun Intl. to O'Hare Intl., returning Sat, May 16, priced at $228 found 5 days ago
Sat, May 9 - Sat, May 16
CUN
Cancun Intl.
ORD
O'Hare Intl.
$238 Roundtrip, found 5 days ago
$238
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, May 9 from Cancun Intl. to O'Hare Intl., returning Sat, May 16, priced at $238 found 5 days ago
Sat, Jul 25 - Wed, Jul 29
CUN
Cancun Intl.
ORD
O'Hare Intl.
$242 Roundtrip, found 5 days ago
$242
Roundtrip
found 5 days ago
Select Frontier Airlines flight, departing Sat, Jul 25 from Cancun Intl. to O'Hare Intl., returning Wed, Jul 29, priced at $242 found 5 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.