United Airlines Online Check-In (2026)
United online check-in opens 24 hours before scheduled departure, subject to eligibility. General airport check-in guidance is 30 minutes before departure without checked bags, 45 minutes with bags and 60 minutes for international flights. United does not publish one universal online cutoff in the guidance used here. Special airports and routes can require earlier times. Gate-arrival recommendations and the onboard deadline are separate; see detailed timings and the official current table.
Page updated: August 2026
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| Airline | United Airlines (UA) |
|---|---|
| Online check-in opens (For eligible online or app trips) | 24 hours before scheduled departure This is not an airport-arrival recommendation, an online eligibility guarantee, or a universal online cutoff. This guidance does not guarantee online eligibility. For online or app check-in. United Airlines - Flight Check In · Verified 2026-10-10 |
| Online check-in availability (Check your airport and itinerary) | The guidance used for this page does not specify one universal online cutoff. Passenger, bag and gate deadlines still apply. United states that minimum requirements for check-in, bags, and boarding vary by departure airport and destination. The guidance used here does not specify one universal online cutoff; check the applicable airport and itinerary requirements. For online or app check-in. United Airlines - Flight Check In · Verified 2026-10-10 |
| Complete airport check-in (General airport check-in guidance when you have no checked bags) | 30 minutes before scheduled departure Subject to United special time limits by airport/route. The official table gives check-in and bag time limits together, not a separate universal passenger-only deadline. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (General airport check-in guidance when you check bags) | 45 minutes before scheduled departure Subject to United special time limits by airport/route; it is not a universal domestic or online cutoff. The Checked Bags page links to airport-specific cutoff guidance; the current exception table must remain authoritative. Applies at the airport. Airport Process | United Airlines; Checked bags | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (General airport check-in guidance for international flights) | 60 minutes before scheduled departure Special airport limits can be 50, 75 minutes, 90 minutes or 2 hours; not a universal online/app close. Check the linked special-time-limits table for your airport. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Recommended time to reach the gate (Recommended for U.S. flights) | 15 minutes before boarding starts Recommendation relative to boarding start, not departure or a check-in cutoff. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Recommended time to reach the gate (Recommended for international flights) | 30 minutes before boarding starts Recommendation relative to boarding start, not departure or a check-in cutoff. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be on board (For passengers who must already be on board) | 15 minutes before scheduled departure Separate from gate-arrival recommendation and special airport/route gate requirements. This is not a check-in deadline. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For flights from Micronesia or the Marshall Islands) | 90 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For flights from HNL, whether or not you check bags) | 45 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For international flights from HNL) | 90 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For departures from SPN or STT) | 90 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For departures from GUM) | 60 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Complete airport check-in (For GUM–HNL flights via Micronesia/Marshall Islands) | 90 minutes before scheduled departure Named airport/route condition only; official special-limits table remains authoritative and not exhausted by these examples. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be at the gate, ready to board (For departures from BRU) | 60 minutes before scheduled departure Named airport/route extra security or documentation requirement; reference is departure, not boarding start. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be at the gate, ready to board (For departures from DUB) | 30 minutes before scheduled departure Named airport/route extra security or documentation requirement; reference is departure, not boarding start. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be at the gate, ready to board (For flights from GUM to HNL) | 60 minutes before scheduled departure Named airport/route extra security or documentation requirement; reference is departure, not boarding start. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be at the gate, ready to board (For departures from ROR, KSA, KWA, MAJ, PNI, SYD, TKK or YAP) | 60 minutes before scheduled departure Named airport/route extra security or documentation requirement; reference is departure, not boarding start. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Be at the gate, ready to board (For departures from LIM) | 30 minutes before scheduled departure Named airport/route extra security or documentation requirement; reference is departure, not boarding start. Applies at the airport. Airport Process | United Airlines · Verified 2026-10-10 |
| Check-In URL | https://www.united.com/checkin |
| Mobile App | United app (iOS, Android) |
| Mobile Boarding Pass | Yes |
| Airport Kiosk | Yes |
Some United airports and routes have special check-in times. Examples before departure include 90 minutes for Micronesia/Marshall Islands; 45 minutes at HNL with or without bags and 90 minutes internationally; 90 minutes at SPN/STT; 60 minutes at GUM; and 90 minutes on GUM–HNL via Micronesia/Marshall Islands. Other entries use 50 minutes, 75 minutes, 90 minutes or 2 hours. This list is not exhaustive; use the linked current official table for your airport, route and bag conditions. Official exception guidance
United recommends reaching the gate 15 minutes before boarding starts for U.S. flights and 30 minutes before boarding starts internationally. Separately, named airport and route gate deadlines are measured before departure: 60 minutes at BRU, GUM–HNL and ROR/KSA/KWA/MAJ/PNI/SYD/TKK/YAP; 30 minutes at DUB and LIM. Gate deadlines are not passenger check-in or bag deadlines. Official exception guidance
Step-by-Step Check-In Guide
- Visit united.com/checkin or open the United app
- Enter your confirmation or eTicket number and last name, or log in using your MileagePlus account
- For international travel, scan your passport using the app
- Select passengers to check in and choose or confirm your seat assignment
- Prepay for any checked bags to use the bag drop shortcut
- Download your electronic boarding pass or print it
Documents Needed
Confirmation or eTicket number, last name, and valid travel documents (passport or visa for international flights). Passport can be scanned via the United app.
Seat Selection
Seat selection is available during check-in. You can choose or confirm your seat assignment, and upgrade options may be available for purchase. Basic Economy passengers may have limited seat selection options.
International Check-In Rules
For international flights, complete airport check-in at least 60 minutes before scheduled departure, subject to United’s official airport/route special time limits: https://www.united.com/en/us/fly/travel/airport/airport-process.html. Passport or visa is required and can be verified through the Travel-Ready Center or scanned using the United app. Some destinations may require additional documentation checks at the gate.
Group Check-In
Online check-in is available for groups of fewer than nine people. Groups of nine or more must check in at the airport.
Troubleshooting
1. 'Not eligible for online check-in' - May occur if you are booked in Basic Economy without a checked bag, have a paper ticket, or need special service requests. 2. 'Passport verification needed' - Scan your passport in the app or visit an airport kiosk. 3. 'Check-in time limit passed' - Airport check-in and checked-bag minima depend on bag status, airport and route; general airport-process values are 30 without bags / 45 with bags / 60 international, subject to special limits. Do not label them a universal online cutoff.
Frequently Asked Questions
- How do I check in for United Airlines?
- Online/app check-in for United Airlines opens 24 hours before scheduled departure. Airport kiosks do not have a universal 24-hour opening. Enter your confirmation number and last name, select passengers, confirm seats, prepay for bags, and download your boarding pass.
- Can I check in online if I bought my ticket at a travel agency?
- Yes, if you have an electronic ticket.
- Can I check my bags on the United app or united.com?
- Yes, you can prepay for your bags and drop them at the bag drop shortcut.
- Who is not eligible for online check-in?
- Passengers with paper tickets, certain special service requests, or those booked in Basic Economy who are not checking a bag.
- What are the separate check-in, bag and gate times for United Airlines?
- Online check-in opens 24 hours before scheduled departure, subject to eligibility. General airport guidance is 30 minutes before departure without bags, 45 minutes with bags and 60 minutes internationally. United recommends reaching the gate 15 minutes before boarding starts for U.S. flights and 30 minutes before boarding starts internationally. You must be on board 15 minutes before departure. Boarding start and departure are different clocks. Special airports and routes have separate departure-based check-in and gate limits; check the official current table. No universal online cutoff is specified in the guidance used here.
- Which airport, route or method exceptions apply to United Airlines?
- Use the official airport table; these examples are not exhaustive. Airport check-in times before departure include 90 minutes for Micronesia/Marshall Islands; 45 minutes at HNL with or without bags (90 minutes internationally); 90 minutes at SPN/STT; 60 minutes at GUM; and 90 minutes on GUM–HNL via Micronesia/Marshall Islands. Other entries use 50 minutes, 75 minutes, 90 minutes or 2 hours. Separate gate deadlines before departure are 60 minutes at BRU, GUM–HNL and ROR/KSA/KWA/MAJ/PNI/SYD/TKK/YAP, and 30 minutes at DUB and LIM. These gate limits are departure-based, not boarding-start recommendations.