Guide · Airport tips
Best and worst airports for connections in 2026
By the TSA Wait Times team · Updated · Published June 2026
Not all connection airports are equal. A 60-minute layover at Charlotte is comfortable; the same 60 minutes at Chicago O'Hare is a sprint. Here is how the major US hub airports stack up for connecting passengers — by transit time, on-time performance, and terminal design.
On this page
- The best connection airports
- The average connection airports
- The stress-inducing connection airports
- Quick reference — minimum layover by airport
- Tips for any connection airport
- Frequently asked questions
- Know exactly when to leave for the airport
The best connection airports
CLT — Charlotte Douglas
Grade: AAmerican hub
A single terminal with concourses laid out in a straight line (A–B–C–D–E). The longest walk in the terminal is about 10 minutes. Ground boarding positions have minimal airbridge delays. American's CLT hub has consistently high on-time departure rates.
Minimum comfortable layover: 45 minutes. 60 minutes is very comfortable.
Caveats: Limited dining options past concourse E. Thunderstorm delays are common in summer — CLT sits in the southeastern storm belt.
CLT terminal map and gate layout →MSP — Minneapolis-St Paul
Grade: ADelta hub
Compact and well-designed. Two terminals (T1 and T2-Humphrey) — but the vast majority of connections are in T1, which is a single coherent layout. Delta's hub operations at MSP are among the most reliable in the country. Cold weather rarely causes the delays it does at snowier hubs.
Minimum comfortable layover: 45 minutes.
Caveats: Transfers from T1 to T2 require the tram or roadway — avoid booked connections involving both terminals.
MSP terminal map and gate layout →PHX — Phoenix Sky Harbor
Grade: A−American/Southwest hub
Two main terminals (T3 and T4, connected landside) with very straightforward gate layouts. Consistently excellent on-time performance driven by sunny weather and minimal weather delays. Short walking distances within each terminal.
Minimum comfortable layover: 45 minutes.
Caveats: T3 and T4 connections require clearing security again — a real issue with tight connections.
PHX terminal map and gate layout →DEN — Denver International
Grade: B+United hub
Large but very well organized — one main Jeppesen Terminal with three concourses (A, B, C) connected by an underground train that runs every 3–4 minutes. Concourse B is the longest, but the train eliminates the worst of the walking.
Minimum comfortable layover: 50 minutes (allow time for the train, which requires underground passage).
Caveats:A-to-C concourse transfers need two train legs. Severe winter weather causes ground stops and delays — Denver's biggest risk factor.
DEN terminal map and gate layout →SEA — Seattle-Tacoma
Grade: B+Alaska hub
Single terminal with two satellite concourses (A/B connected to the main terminal, C accessed by an underground walkway with moving sidewalks). Alaska's hub operations have improved dramatically. Most gates are concentrated in the main concourse or the C satellite.
Minimum comfortable layover: 50 minutes (for South Satellite / C satellite connections).
SEA terminal map and gate layout →The average connection airports
ATL — Atlanta Hartsfield-Jackson
Grade: BDelta hub
Seven concourses (T, A, B, C, D, E, F) connected by an underground train that runs every 2–3 minutes. The train is reliable but concourse A to F is a real distance. ATL's on-time departure performance is strong — Delta runs a tight hub. But the sheer volume means delays cascade aggressively during weather events.
Minimum comfortable layover: 45 minutes if on the same or adjacent concourse. 60 minutes for A-to-F type connections.
Best bet: If your layover is under 60 minutes and involves the international concourse (F), check which concourse your inbound flight lands at before you board.
ATL terminal map and gate layout →DFW — Dallas/Fort Worth
Grade: BAmerican hub
Five separate terminals (A, B, C, D, E) in a horseshoe layout, connected by the Skylink tram inside security. The tram runs every 2 minutes and covers the whole airport. DFW is large but manageable once you know the tram.
Minimum comfortable layover: 50 minutes. International connections through Terminal D need 75+ minutes.
Caveats: Severe thunderstorms in the Dallas area cause DFW ground stops several times per year, particularly June through August.
DFW terminal map and gate layout →BOS — Boston Logan
Grade: B−JetBlue / Delta / American
Four separate terminals (A, B, C, E) with landside-only connections between them — you must exit and re-enter security when changing terminals. The shuttle bus between terminals is slow during peak periods.
Minimum comfortable layover: 75–90 minutes if changing terminals. 45 minutes within the same terminal.
BOS terminal map and gate layout →The stress-inducing connection airports
ORD — Chicago O'Hare
Grade: C+United / American hub
Four separate terminals (1, 2, 3, 5) with two different connection systems — T1-2-3 connected by the underground pedestrian tunnel (long and confusing), T5 international requires an airside shuttle bus. Gate distances within United's T1 (B and C concourses) can be very long. On-time performance at ORD is among the worst of major hubs due to weather, runway congestion, and high traffic volume.
Minimum comfortable layover: 60 minutes within the same terminal, 90 minutes cross-terminal, 2 hours for anything involving T5.
Avoid: Tight connections booked through ORD, especially November–March (winter weather) and June–August (thunderstorm season).
ORD terminal map and gate layout →LGA — LaGuardia
Grade: CAmerican / Delta
The new Terminal B is good, but LGA's overall capacity and runway layout makes on-time performance chronically poor. Weather ripples from the NY metro area are severe. LaGuardia does not handle volume gracefully.
Minimum comfortable layover: 75 minutes. LGA is primarily a domestic origination airport — avoid booking LGA as a connection point if possible.
LGA terminal map and gate layout →EWR — Newark
Grade: CUnited hub
Three separate terminals (A, B, C) connected by a monorail that frequently experiences delays. AirTrain connection times are real but unpredictable. United's EWR hub has structural on-time issues related to congested NY-area airspace.
Minimum comfortable layover: 75 minutes within one terminal, 90 minutes cross-terminal.
EWR terminal map and gate layout →Quick reference — minimum layover by airport
| Airport | Grade | Same terminal | Cross-terminal |
|---|---|---|---|
| CLT | A | 45 min | N/A (1 terminal) |
| MSP | A | 45 min | Avoid |
| PHX | A− | 45 min | 75 min (re-security) |
| DEN | B+ | 50 min | 60 min |
| SEA | B+ | 50 min | 60 min |
| ATL | B | 45 min | 60 min |
| DFW | B | 50 min | 75 min (intl) |
| BOS | B− | 45 min | 75–90 min |
| ORD | C+ | 60 min | 90 min / 2 hr (T5) |
| LGA | C | 75 min | Avoid |
| EWR | C | 75 min | 90 min |
Tips for any connection airport
- CHECK YOUR GATE BEFORE LANDING.
Use your airline app to see your connection gate while you are still on the inbound flight. If the gates are adjacent, relax. If they are end-to-end on different concourses, start planning your route before touchdown.
- CHOOSE YOUR SEAT FOR EXIT SPEED.
On the inbound flight, sit near the front. On a tight connection, being in row 5 vs row 35 saves 5–10 minutes of deplaning time — more than enough to catch a flight.
- GATE AGENTS CAN HOLD FLIGHTS (briefly).
If your inbound is running a few minutes late and other passengers are also connecting, gate agents can sometimes hold a plane for 5–10 minutes. The airline app will usually update the gate status to reflect a held departure.
- HAVE A BACKUP FLIGHT.
Know which later flights serve your destination from the same hub. If you are on the last flight of the night and miss the connection, your options are severely limited.
- AVOID ORD IN WINTER, DFW IN SUMMER.
Weather-prone hubs during high-delay seasons are the highest-risk connections. MSP or CLT are more reliable year-round when you have an option.
Frequently asked questions
Which US airport is best for connecting flights?
Charlotte (CLT) and Minneapolis (MSP) consistently rank among the best for connections — compact, well-designed, and with strong on-time hub operations.
Which US airport should I avoid for connections?
Chicago O'Hare (ORD) is widely considered the most challenging connection airport — multiple terminals, confusing layout, and chronic on-time issues.
How much time do I need to connect at Atlanta?
Plan for at least 45 minutes within the same concourse or adjacent, and 60+ minutes for connections that span multiple concourses (e.g., A to F). ATL's underground train is reliable but the airport is vast.
What is the minimum connection time at a major US airport?
Airlines set MCTs that vary by airport. As a practical rule: 45 minutes at CLT/MSP/PHX, 50-60 minutes at DEN/SEA/ATL, 75-90 minutes at ORD/EWR/BOS for cross-terminal connections.
Related guides
- Missed your connection? Here is exactly what to do — step-by-step rebooking, hotel vouchers, and gate agent scripts
- First-time flyer guide — how to navigate an airport from check-in to boarding
- Minimum connection times by airport — official MCTs and what they mean for your booking
- How to navigate large airports — moving fast through ATL, ORD, DFW, and other mega-hubs
Data verified . Sources: BTS On-Time Performance data; DOT Fly Rights; airport terminal diagrams via individual airport authority websites (CLT, MSP, PHX, DEN, SEA, ATL, DFW, BOS, ORD, LGA, EWR).
Know exactly when to leave for the airport
Even the best connection airport cannot save you if you miss your first flight. Your Leave-By Timecounts backward from your departure using today's live TSA wait, your drive time, and the walk to your gate — so you arrive with room to breathe.
Get your Leave-By Time