Layover guide · CMH · Last reviewed 10 May 2026
Layover in Columbus John Glenn (CMH): What to Do Hour by Hour
Almost nobody connects through Columbus on purpose. CMH is an origin and destination airport, so a long layover here usually means a delay, a split ticket or a very early arrival. Here is what 3, 5 and 8 hours actually buy you, and how to survive the overnight.
Layover verdict Small, clean and genuinely easy, with fast free wifi and gates a few minutes from every checkpoint. The weaknesses are real too: each concourse is a sealed pocket behind its own checkpoint, restaurants close early, and there is exactly one lounge in the whole airport.
Best lounge play The Escape Lounge in Concourse B near gate B32 is the only lounge at CMH. It opens daily from 5am to 8pm and admits Priority Pass members, Amex Platinum cardholders and paying walk ins when space allows. No Admirals Club, no Sky Club, no United Club exists here.
The one thing to know Concourses A, B and C each have their own TSA checkpoint and there is no airside walkway between them. Changing concourses means exiting and clearing security again, and all three checkpoints run 4am to 8:30pm, so late evening flyers should clear early.
First, orient yourself
The 5 minute version of CMH
Columbus John Glenn is a single terminal airport with three concourses fanned off a central ticketing hall: A at the south end, B in the middle, C at the north end. Departures live on the upper level, arrivals below, and you can cross the entire landside building on foot in about ten minutes.
The detail that shapes every layover here is the security setup. Each concourse has its own TSA checkpoint at its entrance, all three open from 4am to 8:30pm, and there is no airside connection between concourses. Clear the A checkpoint and you are sealed in with five Southwest gates, A2 to A6. Concourse B is the big one, 14 gates from B19 to B36, holding the best of the food and the airport's only lounge. Concourse C runs ten gates, C46 to C56. Moving between concourses means walking back out, crossing the ticketing hall and queueing for screening again, so confirm which concourse your departure uses before you commit to a checkpoint.
Distances are tiny. The published walking times run one to five minutes from any checkpoint to any gate, which is why CMH consistently feels effortless. Wifi is free with no time limit throughout the terminal on the airport's public network, and it ranks among the faster airport networks in the country. Water bottle filling stations and outlets are spread through every concourse. The catch is the clock: most restaurants track the flight schedule and wind down by early evening, and travelers grumble about it often enough that even the airport's own guides tell you to check hours ahead of time.
One more thing to factor in through 2029: CMH Next, the 2 billion dollar rebuild that will replace this terminal with a new one for the airport's centenary. Construction is steadily reshaping roads, parking and walking routes around the property, so add a few minutes to every landside leg and trust the signage over your memory of the place.
Hour by hour
What your layover actually buys you
3 hours: stay in your concourse and eat early
Three hours at CMH is comfortable bordering on roomy. Budget 30 minutes for deplaning and finding your next gate, protect the final 45 for boarding, and you still hold about 90 minutes of free time in a building you can cross in minutes. On one ticket your connection almost certainly stays inside a single concourse, since each airline clusters its gates, and that is exactly where you should stay.
Spend the time on food, and spend it earlier than feels natural, because kitchens here close early and an 8pm dinner plan can end at a vending machine. Concourse B holds the strongest hand: BrewDog for beer, Donatos Pizza for the hometown pie, Bob Evans Express for breakfast hours, Vino Volo for a quiet glass, and a Jeni's Splendid Ice Creams vending machine for the Columbus dessert that locals actually queue for downtown. Concourse A is Southwest territory with a Chili's and a Starbucks past security, and Concourse C is the thinnest of the three for choices.
Do not burn your margin changing concourses for a better restaurant. The reclear costs you the security line twice, and nothing on the other side of the building justifies it.
5 hours: the lounge, or the first real escape
Five hours is lounge time, and CMH keeps the decision simple because there is exactly one. The Escape Lounge sits in Concourse B near gate B32, opens daily from 5am to 8pm, and admits Priority Pass members, Amex Platinum cardholders and walk ins who pay at the door when capacity allows. Inside you get a small buffet, bar service and a calm room that beats the gate area by a wide margin. Two quirks to know: there are no bathrooms inside the lounge itself, so go before you settle in, and the 8pm close squeezes out evening travelers. The full picture, with access methods and pricing, is in the CMH lounge directory.
Flying Southwest out of A, or anything out of C, the lounge is technically reachable but rarely worth the trip: you would clear B security, sit, exit and rescreen at your own concourse. With five slow afternoon hours it can work; with less, skip it.
Five hours is also where leaving the building enters the conversation. Easton Town Center, the open air shopping and restaurant district north of the airport, is about a 10 minute rideshare away and absorbs two hours pleasantly. Downtown at this length is a meal run, not a tour; the full math is in the next section.
8 hours: downtown Columbus, properly
Eight hours opens the city. A rideshare to downtown takes about 10 to 15 minutes off peak along Interstate 670, roughly 7 miles, so even a cautious plan leaves four clear hours in the city with margin on both ends.
Aim at the middle of town and pick two stops, not four. The Scioto Mile gives you the riverfront walk with the skyline across the water. North Market, the food hall near the convention center, covers lunch and holds an original Jeni's counter. German Village, just south of downtown, delivers brick streets, Schmidt's Sausage Haus and the Book Loft, a bookstore sprawled across 32 rooms of connected buildings. Any two of those plus a meal fills the window without rushing it.
The return rule does not bend: be back in the security line 90 minutes before a domestic departure, which matches the airport's own guidance, and remember the checkpoints close at 8:30pm. If your flight leaves late in the evening, clear security with room to spare and confirm timing with your airline rather than gambling on the line.
Overnight: open, landside, and quiet
The terminal stays open 24 hours and overnight travelers are tolerated without drama, but this is a landside night. Checkpoints close at 8:30pm and reopen at 4am, so the gate areas are off the table and you sleep in the public areas near ticketing or baggage claim. Eat before the kitchens shut, fill your water bottle while you still can, and expect cleaning crews plus some construction noise as the CMH Next works continue around the building.
The first departure wave queues from about 4am, so set an alarm for 3:45am if you want to beat the line at your checkpoint. If a real bed wins the argument, several hotels with airport shuttles sit minutes away. Spot by spot detail, including which corners stay quiet and where the outlets cluster, lives in the guide to sleeping at CMH overnight.
City escape
Leaving the airport: the honest math
| Is leaving realistic | Yes, unusually so. From about 5 hours for Easton Town Center or a downtown meal, comfortable from 6 |
| Getting downtown | Rideshare or taxi is the honest answer in both directions; COTA's Route 7 local bus also links the airport and downtown but crawls through its stops |
| Minutes to downtown | About 10 to 15 by car off peak, roughly 7 miles via Interstate 670; 35 to 45 by local bus, to be confirmed against the current COTA timetable |
| Minimum safe layover | 5 hours with carry on only, 6 hours for comfort |
| Be back at security | 90 minutes before departure, and always before the 8:30pm checkpoint close |
| Entry rules | Domestic itineraries face no extra checks; foreign visitors will have cleared US immigration at their gateway airport already. Verify visa rules before travel |
One warning on the bus: COTA's dedicated AirConnect airport shuttle no longer runs as a daily service and has lately operated only around selected conventions, so do not build a plan on it; check the COTA site for what is actually running on your date. With a layover clock ticking, pay for the rideshare. The fare is short, the route is direct, and the 90 minute return buffer stays intact even if traffic misbehaves.
Check lounge access for CMH
CMH has one lounge, the Escape Lounge in Concourse B, and three ways in: Priority Pass, select premium credit cards, or paid entry when space allows. Compare current access options, prices and hours before you fly.
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FAQ
CMH layover questions
Can I sleep overnight at Columbus John Glenn Airport?
Yes. The terminal stays open 24 hours and overnight travelers are tolerated in the landside public areas. Security checkpoints close at 8:30pm and reopen at 4am, so plan to sleep near ticketing or baggage claim rather than at the gates, and eat before the restaurants close for the night.
Is there a lounge at CMH?
One. The Escape Lounge in Concourse B near gate B32 opens daily from 5am to 8pm, takes Priority Pass, admits Amex Platinum cardholders and sells entry at the door when space allows. There is no Admirals Club, Delta Sky Club or United Club at CMH, and a USO near Concourse C serves eligible military travelers only.
Can I leave the airport during a layover at CMH?
Yes. Downtown Columbus is roughly 7 miles away, about 10 to 15 minutes by rideshare off peak, and domestic itineraries face no extra checks on the way out. Plan it from 5 hours, be back at security 90 minutes before departure, and verify visa rules before travel if you are a foreign visitor.
How do I get between concourses at CMH?
You walk landside. Concourses A, B and C each have their own security checkpoint and there is no airside connection between them, so changing concourses means exiting, crossing the ticketing level and clearing security again. The walks themselves take only a few minutes.
Is wifi free at Columbus airport?
Yes, free with no time limit throughout the terminal and all three concourses on the airport's public network, and it rates among the faster airport wifi networks in the US. Outlets and water bottle filling stations are spread through every concourse.
Is a 1 hour connection enough at CMH?
On one ticket with both flights on the same airline, usually yes: gates sit one to five minutes from each checkpoint and an airline's flights cluster in a single concourse. If your connection involves a concourse change you must rescreen, so treat 90 minutes as the floor and check your concourses in advance.
Keep planning
More CMH guides
Columbus John Glenn (CMH) hub guide
The complete CMH overview: quick facts, the three concourse layout, and every guide in one place.
Every CMH lounge and how to get in
The short honest list: the Escape Lounge, the military USO, and the access methods that actually work.
Sleeping at CMH
The landside reality after the 8:30pm checkpoint close, the quiet corners, and the hotels with shuttles.
Priority Pass at CMH
What your membership opens here, the Escape Lounge hours, and when capacity limits bite.
CMH transit and connection guide
Minimum connection times, the concourse reclear problem, and getting to downtown Columbus.
Nearby
Related airports
Cincinnati (CVG)
About two hours southwest by road, with a bigger route map and more lounge depth than CMH offers.
Dayton (DAY)
Ohio's other compact origin and destination airport, about 80 miles west along Interstate 70.
Cleveland Hopkins (CLE)
Two hours north and a touch larger, with a rail link downtown that CMH travelers can only envy.
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