Frontier Airlines Flight AA1855 Deals & Information (2025/2026)

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Frontier Airlines Flight 1855 Route Deals From $71

The cheapest prices found with in the last 7 days for return flights were $119 and $71 for one-way flights to San Diego Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Fri, Sep 5 - Wed, Sep 10
ORD
O'Hare Intl.
SAN
San Diego Intl.
$119 Roundtrip, just found
$119
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Sep 5 from O'Hare Intl. to San Diego Intl., returning Wed, Sep 10, priced at $119 just found
Thu, Aug 28 - Sat, Sep 6
ORD
O'Hare Intl.
SAN
San Diego Intl.
$122 Roundtrip, found 1 hour ago
$122
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Aug 28 from O'Hare Intl. to San Diego Intl., returning Sat, Sep 6, priced at $122 found 1 hour ago
Thu, Aug 28 - Sat, Sep 6
ORD
O'Hare Intl.
SAN
San Diego Intl.
$134 Roundtrip, found 1 hour ago
$134
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Aug 28 from O'Hare Intl. to San Diego Intl., returning Sat, Sep 6, priced at $134 found 1 hour ago
Sat, Oct 11 - Sat, Oct 25
ORD
O'Hare Intl.
SAN
San Diego Intl.
$135 Roundtrip, just found
$135
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, Oct 11 from O'Hare Intl. to San Diego Intl., returning Sat, Oct 25, priced at $135 just found
Sat, Dec 6 - Sat, Dec 13
ORD
O'Hare Intl.
SAN
San Diego Intl.
$136 Roundtrip, found 1 hour ago
$136
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Sat, Dec 6 from O'Hare Intl. to San Diego Intl., returning Sat, Dec 13, priced at $136 found 1 hour ago
Sat, Oct 25 - Sun, Nov 2
ORD
O'Hare Intl.
SAN
San Diego Intl.
$138 Roundtrip, found 2 hours ago
$138
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Sat, Oct 25 from O'Hare Intl. to San Diego Intl., returning Sun, Nov 2, priced at $138 found 2 hours ago
Fri, Dec 12 - Sat, Dec 13
ORD
O'Hare Intl.
SAN
San Diego Intl.
$139 Roundtrip, found 1 hour ago
$139
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Fri, Dec 12 from O'Hare Intl. to San Diego Intl., returning Sat, Dec 13, priced at $139 found 1 hour ago
Thu, Oct 2 - Sat, Oct 11
ORD
O'Hare Intl.
SAN
San Diego Intl.
$140 Roundtrip, found 14 hours ago
$140
Roundtrip
found 14 hours ago
Select Frontier Airlines flight, departing Thu, Oct 2 from O'Hare Intl. to San Diego Intl., returning Sat, Oct 11, priced at $140 found 14 hours ago
Thu, Nov 6 - Sun, Nov 9
ORD
O'Hare Intl.
SAN
San Diego Intl.
$142 Roundtrip, just found
$142
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Nov 6 from O'Hare Intl. to San Diego Intl., returning Sun, Nov 9, priced at $142 just found