Flights from Philadelphia to Round Lake

Cheapest flights from Philadelphia

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$70 Roundtrip, found 1 day ago

$70

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $70 found 1 day ago

Thu, Sep 25 - Fri, Sep 26

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$90 Roundtrip, found 1 day ago

$90

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Fri, Sep 26, priced at $90 found 1 day ago

Thu, Sep 4 - Mon, Sep 8

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$120 Roundtrip, found 1 day ago

$120

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to O'Hare Intl., returning Mon, Sep 8, priced at $120 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$125 Roundtrip, found 1 day ago

$125

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $125 found 1 day ago

Thu, Sep 4 - Fri, Sep 5

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$127 Roundtrip, found 1 day ago

$127

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 4 from Philadelphia Intl. to O'Hare Intl., returning Fri, Sep 5, priced at $127 found 1 day ago

Fri, Sep 5 - Fri, Sep 12

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$134 Roundtrip, found 1 day ago

$134

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to O'Hare Intl., returning Fri, Sep 12, priced at $134 found 1 day ago

Thu, Sep 18 - Mon, Sep 22

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$146 Roundtrip, found 6 days ago

$146

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Thu, Sep 18 from Philadelphia Intl. to O'Hare Intl., returning Mon, Sep 22, priced at $146 found 6 days ago

Thu, Sep 25 - Fri, Oct 3

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$148 Roundtrip, found 1 day ago

$148

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Fri, Oct 3, priced at $148 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$151 Roundtrip, found 1 day ago

$151

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $151 found 1 day ago

Fri, Aug 8 - Wed, Aug 27

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$154 Roundtrip, found 6 days ago

$154

Roundtrip

found 6 days ago

Select Spirit Airlines flight, departing Fri, Aug 8 from Philadelphia Intl. to O'Hare Intl., returning Wed, Aug 27, priced at $154 found 6 days ago

Fri, Sep 5 - Sun, Sep 7

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$156 Roundtrip, found 1 day ago

$156

Roundtrip

found 1 day ago

Select Frontier Airlines flight, departing Fri, Sep 5 from Philadelphia Intl. to O'Hare Intl., returning Sun, Sep 7, priced at $156 found 1 day ago

Wed, Oct 1 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select United flight, departing Wed, Oct 1 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $157 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$157 Roundtrip, found 1 day ago

$157

Roundtrip

found 1 day ago

Select American Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $157 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$160 Roundtrip, found 1 day ago

$160

Roundtrip

found 1 day ago

Select American Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $160 found 1 day ago

Thu, Sep 25 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$161 Roundtrip, found 1 day ago

$161

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Thu, Sep 25 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $161 found 1 day ago

Sun, Sep 21 - Fri, Sep 26

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$162 Roundtrip, found 6 days ago

$162

Roundtrip

found 6 days ago

Select Frontier Airlines flight, departing Sun, Sep 21 from Philadelphia Intl. to O'Hare Intl., returning Fri, Sep 26, priced at $162 found 6 days ago

Wed, Oct 1 - Thu, Oct 2

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$189 Roundtrip, found 1 day ago

$189

Roundtrip

found 1 day ago

Select Spirit Airlines flight, departing Wed, Oct 1 from Philadelphia Intl. to O'Hare Intl., returning Thu, Oct 2, priced at $189 found 1 day ago

Sat, Sep 6 - Sat, Sep 6

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$191 Roundtrip, found 1 day ago

$191

Roundtrip

found 1 day ago

Select Delta flight, departing Sat, Sep 6 from Philadelphia Intl. to O'Hare Intl., returning Sat, Sep 6, priced at $191 found 1 day ago

Thu, Sep 4 - Tue, Sep 9

PHL

Philadelphia Intl.

ORD

O'Hare Intl.

$201 Roundtrip, found 1 day ago

$201

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Thu, Sep 4 from Philadelphia Intl. to O'Hare Intl., returning Tue, Sep 9, priced at $201 found 1 day ago

Sat, Aug 2 - Tue, Aug 5

TTN

Mercer

ORD

O'Hare Intl.

$208 Roundtrip, found 20 hours ago

$208

Roundtrip

found 20 hours ago

Select Frontier Airlines flight, departing Sat, Aug 2 from Mercer to O'Hare Intl., returning Tue, Aug 5, priced at $208 found 20 hours ago