PHL

$68 Find Cheap Flights from Illinois to Philadelphia

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Philadelphia departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Philadelphia

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Everything you should know

Cheapest round-trip
$108
Overall average: $356
Frontier
jue. 3/12dom. 3/22
ORD - PHL • Non-stop
Cheapest one-way
$68
Typical prices: $173-$393
Frontier
mié. 2/18
STL - PHL • 1 stop
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We hope you love your trip to Philadelphia!
Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to Philadelphia

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to Philadelphia that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to Philadelphia

jue., mar. 12 - dom., mar. 22
Frontier Logo
3:21 pm - 6:30 pm
ORD
-
PHL
2h 09mnonstop
Frontier Logo
7:31 pm - 9:07 pm
PHL
-
ORD
2h 36mnonstop
$108Frontier
lun., mar. 2 - mié., mar. 4
Frontier Logo
10:15 am - 1:24 pm
ORD
-
PHL
2h 09mnonstop
Frontier Logo
11:40 am - 4:52 pm
PHL
-
ORD
6h 12m
1 stop
$127Frontier
sáb., feb. 28 - mar., mar. 3
Frontier Logo
6:25 am - 6:11 pm
MDW
-
PHL
10h 46m
1 stop
Frontier Logo
11:40 am - 7:07 pm
PHL
-
MDW
8h 27m
1 stop
$128Frontier
vie., feb. 6 - mar., feb. 10
Spirit Airlines Logo
8:43 pm - 8:47 am
ORD
-
PHL
11h 04m
1 stop
Spirit Airlines Logo
12:40 pm - 11:47 pm
PHL
-
ORD
12h 07m
1 stop
$129Spirit Airlines
mié., mar. 18 - dom., mar. 22
Multiple Airlines Logo
11:00 am - 7:24 pm
ORD
-
PHL
7h 24m
1 stop
Multiple Airlines Logo
7:31 pm - 9:07 pm
PHL
-
ORD
2h 36mnonstop
$130Multiple Airlines
vie., feb. 6 - mar., feb. 10
Multiple Airlines Logo
4:44 pm - 7:59 pm
ORD
-
PHL
2h 15mnonstop
Multiple Airlines Logo
12:40 pm - 11:47 pm
PHL
-
ORD
12h 07m
1 stop
$135Multiple Airlines
mar., feb. 24 - mar., mar. 10
United Airlines Logo
2:51 pm - 9:09 pm
PIA
-
PHL
5h 18m
1 stop
United Airlines Logo
9:55 am - 1:45 pm
PHL
-
PIA
4h 50m
1 stop
$269United Airlines
mié., abr. 8 - vie., abr. 17
Delta Logo
5:14 pm - 12:57 am
MLI
-
PHL
6h 43m
1 stop
Delta Logo
5:19 pm - 10:35 pm
PHL
-
MLI
6h 16m
1 stop
$269Delta
vie., abr. 10 - vie., abr. 17
Delta Logo
5:14 pm - 12:57 am
MLI
-
PHL
6h 43m
1 stop
Delta Logo
5:19 pm - 10:35 pm
PHL
-
MLI
6h 16m
1 stop
$274Delta
mié., feb. 4 - dom., feb. 8
United Airlines Logo
10:45 am - 5:33 pm
PIA
-
PHL
5h 48m
1 stop
United Airlines Logo
6:30 am - 12:38 pm
PHL
-
PIA
7h 08m
1 stop
$279United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$68
Most popular time to fly and prices are also 4% lower on average.
Flight from St. Louis to Philadelphia

FAQs for booking flights from Illinois to Philadelphia

  • How does KAYAK find such low prices on flights from Illinois to Philadelphia?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to Philadelphia.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to Philadelphia?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Philadelphia from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to Philadelphia?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Philadelphia with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to Philadelphia?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Philadelphia from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Philadelphia?

Book flights to Philadelphia if you plan to visit one of these locations
Wildwood Crest
Newark
North Wildwood
Vineland
Essington
West Chester
Elkton
Pottstown
Willow Grove
Kennett Square
Somers Point
Voorhees
Middletown
Wyomissing
Glen Mills
Phoenixville
Bird in Hand
Blackwood
Strasburg
Millville

Everything you need to know for your flight to Philadelphia

Information on the airport you'll fly into in Philadelphia

Philadelphia (PHL)