ORD Chicago O'Hare Airport Guide: Everything You Need to Know

O'Hare Airport Overview

Chicago O'Hare International Airport is a beast. It handles about 83 million passengers a year, serves as a major hub for both United and American Airlines, and is notorious for weather delays. But it's also one of the best-connected airports in the US, with direct flights to practically everywhere.

The airport has four terminals: Terminal 1 (United), Terminal 2 (smaller carriers and some United flights), Terminal 3 (American Airlines), and Terminal 5 (international). Yes, there's no Terminal 4 - it was demolished years ago and the numbering was never updated.

Terminal Breakdown

Terminal 1 (United Airlines Hub)

Two concourses: B and C. Concourse B is attached to the main terminal building. Concourse C is a satellite connected by an underground pedestrian walkway featuring a trippy neon light tunnel with music. It's weirdly delightful. United's Polaris Lounge in Concourse C is one of the best business class lounges in the country.

Terminal 2

The smallest terminal. Handles some United domestic flights and a few smaller carriers. Connected to Terminals 1 and 3 by pedestrian walkways, so you can walk between all three domestic terminals without leaving security.

Terminal 3 (American Airlines Hub)

The largest terminal at O'Hare with four concourses: G, H, K, and L (80 gates total). It's massive, so check your gate and plan accordingly. American's Admirals Club lounges are in Concourses G and L, with the Flagship Lounge in Concourses H/K for premium passengers.

Terminal 5 (International)

All international arrivals and most international departures come through here. It's separated from the domestic terminals, so you'll need to take the Airport Transit System (ATS) train or a bus to get here. Budget extra time for this transfer. Delta recently opened a large Sky Club here - 22,000 square feet of lounge space.

Getting Between Terminals

Terminals 1, 2, and 3 are connected by pedestrian walkways, so you can walk between them without leaving security. Terminal 5 is separate and requires the free ATS train. If you're connecting from a domestic to international flight (or vice versa), budget at least 45-60 minutes for the transfer, more if you need to re-clear security.

Getting To and From Chicago

CTA Blue Line (Best Option)

This is the move. The Blue Line runs 24/7 between O'Hare and downtown Chicago. The station is in the lower level of Terminal 2, connected to Terminals 1 and 3 by walkway. A ride costs $5 (from O'Hare; $2.50 from the city) and takes about 45 minutes to the Loop. It runs every 3-8 minutes during the day and every 10-15 minutes overnight.

Pro tip: the Blue Line is often faster than a taxi or rideshare during rush hour, when the Kennedy Expressway turns into a parking lot.

Metra (Commuter Rail)

The North Central Service Metra line stops at the O'Hare Transfer station, connecting to the Multi-Modal Facility. Good option if you're heading to Chicago's north suburbs.

Rideshare (Uber/Lyft)

Pickup is at the designated rideshare area in each terminal's lower level. Expect to pay $30-$50 to downtown Chicago, though surge pricing during events or bad weather can push it higher. The ride takes 25-50 minutes depending on traffic.

Taxi

Metered fare to downtown runs about $40-$55. Available curbside at each terminal.

Rental Cars

The Multi-Modal Facility (MMF) houses the rental car center. Take the free ATS train from any terminal. All major companies are there.

Lounges

O'Hare has excellent lounge options, especially if you're flying United or American.

• United Polaris Lounge (Terminal 1, Concourse C) - The star of O'Hare. Full dining service, shower suites, day beds, and a stunning design. For United international business and first class passengers only.
• United Club (Terminal 1, multiple locations) - Standard United lounge with food, drinks, and WiFi. Also a location in Terminal 2.
• American Airlines Admirals Club (Terminal 3, Concourses G and L) - Two locations with the usual AA lounge amenities.
• American Airlines Flagship Lounge (Terminal 3, Concourses H/K) - Premium lounge for flagship first and business class passengers.
• Delta Sky Club (Terminal 5) - Massive 22,000-square-foot lounge. A huge upgrade from Delta's previous setup.
• Swissport Lounge (Terminal 5) - Open to Priority Pass holders. Decent option for international travelers.

Food and Dining

Don't Miss

• Tortas Frontera by Rick Bayless (Terminals 1, 3, and 5) - Celebrity chef Rick Bayless brings his Mexican flavors to O'Hare. The tortas (Mexican sandwiches) are genuinely excellent. This is the single best restaurant at the airport.
• Billy Goat Tavern (Terminal 1, Concourse C) - The legendary Chicago bar made famous by the SNL "Cheezborger" sketch. Get the double cheese.
• Garrett Popcorn (Terminals 2 and 3) - Chicago's famous caramel and cheese popcorn mix (the Chicago Mix). Grab a bag for the plane.

Other Good Options

Publican Tavern (Terminal 3) serves solid beer and sausages. Summer House Santa Monica (Terminal 5) is a bright, health-forward spot. Wolfgang Puck has locations throughout. For quick bites, Portillo's hot dogs represent Chicago well.

WiFi

O'Hare offers free, unlimited WiFi throughout all terminals. It's fast enough for streaming and video calls. Connect to the "ohare free wifi" network. No time limits, no premium tier needed.

Sleeping at O'Hare

The Reality

O'Hare doesn't have sleeping pods, nap rooms, or any dedicated sleep facilities inside the secure area. Most gate seating has armrests that prevent lying down. If you get stuck overnight here, it's going to be rough.

Best Free Sleeping Spots

• Terminal 3, Concourses H, K, and L - Padded benches without armrests. Concourse K has some couches past security.
• Terminal 1, near Gates C24-C26 - Comfy couches past the Brioche Doree cafe.
• Floors - If you're prepared, bring a sleeping pad. The floors are cold concrete or thin carpet.

Hotels

The Hilton Chicago O'Hare is the most convenient hotel, with direct underground access to Terminal 2. You don't even need to go outside. Rates vary but expect $150-$250 per night. Several other hotels near the airport offer free shuttle service.

Pro Tips for Overnight Stays

O'Hare gets cold at night, even in summer. Bring a warm layer and a blanket. Pack an eye mask and earplugs - the airport never fully quiets down. There's no transit hotel inside security, so if you leave for a hotel, you'll need to re-clear screening in the morning.

Layover Tips

• Short layover (under 2 hours): Stay in your terminal. If connecting between Terminals 1-3, you can walk. If Terminal 5 is involved, move fast - the ATS train adds time.
• Medium layover (2-5 hours): Get a Tortas Frontera torta. Visit the neon tunnel between Concourses B and C in Terminal 1. If you have lounge access, the Polaris Lounge is worth the trip.
• Long layover (5+ hours): Take the Blue Line into Chicago. You can reach the Loop in 45 minutes, grab deep-dish pizza at Lou Malnati's or Giordano's, and be back in time. Leave at least 2.5 hours for the return trip plus security.
• Weather delays: O'Hare is infamous for them, especially in winter. If storms are forecast, charge your devices, download entertainment, and have snacks ready. Delays can last hours.
• Construction: A new 19-gate satellite concourse (Concourse D) is under construction with completion expected around 2028. Expect some disruption in certain areas.