Frontier Airlines Flight 45 Deals & Information (2025/2026)

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Frontier Airlines Flight 45 Route Deals From $113

The cheapest prices found with in the last 7 days for return flights were $202 and $113 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Sat, Dec 6 - Mon, Dec 15
CUN
Cancun Intl.
ORD
O'Hare Intl.
$202 Roundtrip, found 7 hours ago
$202
Roundtrip
found 7 hours ago
Select Frontier Airlines flight, departing Sat, Dec 6 from Cancun Intl. to O'Hare Intl., returning Mon, Dec 15, priced at $202 found 7 hours ago
Thu, Dec 4 - Mon, Dec 8
CUN
Cancun Intl.
ORD
O'Hare Intl.
$203 Roundtrip, found 1 hour ago
$203
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Cancun Intl. to O'Hare Intl., returning Mon, Dec 8, priced at $203 found 1 hour ago
Wed, Feb 4 - Mon, Feb 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$209 Roundtrip, found 10 hours ago
$209
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Wed, Feb 4 from Cancun Intl. to O'Hare Intl., returning Mon, Feb 9, priced at $209 found 10 hours ago
Thu, Feb 5 - Mon, Feb 9
CUN
Cancun Intl.
ORD
O'Hare Intl.
$210 Roundtrip, found 4 days ago
$210
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Thu, Feb 5 from Cancun Intl. to O'Hare Intl., returning Mon, Feb 9, priced at $210 found 4 days ago
Tue, Nov 25 - Wed, Dec 3
CUN
Cancun Intl.
ORD
O'Hare Intl.
$211 Roundtrip, found 5 hours ago
$211
Roundtrip
found 5 hours ago
Select Frontier Airlines flight, departing Tue, Nov 25 from Cancun Intl. to O'Hare Intl., returning Wed, Dec 3, priced at $211 found 5 hours ago
Tue, Nov 25 - Sun, Nov 30
CUN
Cancun Intl.
ORD
O'Hare Intl.
$213 Roundtrip, found 6 days ago
$213
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, Nov 25 from Cancun Intl. to O'Hare Intl., returning Sun, Nov 30, priced at $213 found 6 days ago
Thu, Dec 4 - Mon, Dec 8
CUN
Cancun Intl.
ORD
O'Hare Intl.
$216 Roundtrip, found 1 hour ago
$216
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Dec 4 from Cancun Intl. to O'Hare Intl., returning Mon, Dec 8, priced at $216 found 1 hour ago
Wed, Jan 14 - Sun, Jan 18
CUN
Cancun Intl.
ORD
O'Hare Intl.
$222 Roundtrip, just found
$222
Roundtrip
just found
Select Frontier Airlines flight, departing Wed, Jan 14 from Cancun Intl. to O'Hare Intl., returning Sun, Jan 18, priced at $222 just found
Sun, Jan 25 - Tue, Feb 3
CUN
Cancun Intl.
ORD
O'Hare Intl.
$227 Roundtrip, found 6 days ago
$227
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Sun, Jan 25 from Cancun Intl. to O'Hare Intl., returning Tue, Feb 3, priced at $227 found 6 days ago
Tue, Feb 24 - Mon, Mar 2
CUN
Cancun Intl.
ORD
O'Hare Intl.
$228 Roundtrip, found 8 hours ago
$228
Roundtrip
found 8 hours ago
Select Frontier Airlines flight, departing Tue, Feb 24 from Cancun Intl. to O'Hare Intl., returning Mon, Mar 2, priced at $228 found 8 hours ago