Dulles to Chicago/Romeoville (IAD–LOT) — Airlines, Schedules & Connections

IAD Airport Page →
590 mi airlines 0/wk
On-time Some delays Frequent delays
Connecting Flight Schedule 7 1-stop flights Verified 2w ago
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  Flight Airline AC Dep Arr Dur OTP Sched  
✈ Nonstop

No flights match your filters.

No nonstop flights on this route. connecting options below.

✦ 1-STOP More options, longer trips
✧ 2-STOP Loading... Reach the hardest destinations
Dulles to Chicago/Romeoville
Connecting service available through multiple hubs.
590 mi 1h 39m nonstop -1h behind 7 1-stop hubs

While no nonstop service exists between IAD and LOT, connecting options are available through 7 hubs.

Also explore IAD Routes LOT Routes IAD Live Flights LOT Live Flights IAD Delays
Connections

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for IAD to LOT.
1-STOP
One-Stop Connections
7
Hubs
~4h
Fastest
~35h
Longest
Verified with published schedule alignment and minimum connection time.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.
Know before you go

Travel Essentials

Practical planning for this route.
Time Difference
-1h
Chicago/Romeoville is 1 hour behind Dulles.
IAD: EDT · LOT: CDT

When it's 6:00 PM in Dulles, it's 5:00 PM in Chicago/Romeoville.
Distance & Flight Time
590 mi / 949 km
Nonstop flight time is approximately 1h 39m.
Getting to IAD

WMATA Silver Line Metro now reaches Dulles directly; take Silver Line to Washington Dulles Airport station (about 65 min from Metro Center, ~$7). The connection opened in late 2022.Ride-shares from downtown DC run $35–60 and take 35–50 minutes via I-66 (longer during peak hours). Washington Flyer coach to Wiehle-Reston East Metro costs $6. The airport is 27 miles from downtown; taxis are expensive ($60–80).

Facts

IAD–LOT Quick Facts

Key statistics for the Dulles to Chicago/Romeoville route.
Route details
Distance590 mi / 949 km
Flight time1h 39m
Time difference-1 hour
Airlines (nonstop)0
1-stop connections7 hubs
Origin: IAD
Full nameWashington Dulles International Airport
IATA / ICAOIAD / KIAD
TimezoneAmerica/New_York
Passengers/yr26.0M
Elevation312 ft / 95 m
Destination: LOT
Full nameLewis University Airport
IATA / ICAOLOT / KLOT
TimezoneAmerica/Chicago
Elevation679 ft / 207 m
FAQ

Frequently Asked Questions

Common questions about IAD to LOT flights.
Nonstop flights from Washington Dulles International Airport to Lewis University Airport take approximately 1h 39m. The route covers 590 miles.
Yes, 1-stop connections are available through STL, BNA, OMA, PIE, SRQ, HOU and HND. These options provide additional schedule flexibility.
Chicago/Romeoville is 1 hour behind Dulles.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.

Flights from IAD to LOT

Washington Dulles International Airport (IAD) and Lewis University Airport (LOT) are connected through multiple connecting hub airports.

IAD to LOT Flight Duration and Schedule

Nonstop flight time from IAD to LOT ranges from 1 hours 39 minutes. The route covers a distance of 590 miles (949 km).

Connecting Options and Alternatives

7 one-stop connections are available, with the fastest taking approximately 4 hours via STL.