UCI Academic Calendar 2025‑2026: Important Dates & Deadlines

The UCI Academic Calendar 2025‑2026 brings together every essential date from UCI enrollment deadlines, tuition payment due dates, and course add/drop periods to campus holidays and final exam schedules.

The UC Irvine academic calendar helps students lock in UCI term dates, plan around the UCI exam schedule, and never miss key milestones such as the last day to withdraw without a “W”, Priority Enrollment windows, or the start of Summer Session registration.

University of California, Irvine operates on a quarter system:

• Fall Quarter (late September to mid‑December; about 10 weeks of instruction + finals week), so if you’re wondering how long a quarter is at UCI, expect roughly 11 weeks total.
• Winter Quarter at UCI runs from early January through mid‑March—about 10 instructional weeks plus a finals week (so roughly 11 weeks total), matching the length of Fall and Spring Quarters.
• Spring Quarter (late March to early June; 10 instructional weeks + finals).
• Summer Session (mid‑June to late September), split into Session I (6 weeks), Session 10WK (10 weeks), and Session II (6 weeks), each with its own add/drop and fee deadlines

Whether you’re mapping out when you can enroll at UCI during Priority Enrollment, checking the last day to drop a course at UCI, budgeting for quarter‐based tuition fees, or planning Summer Session courses, the UCI Academic Calendar 2025‑2026 is your definitive guide for a successful year at UC Irvine.

UCI Academic Calendar Fall 2025

1. The Schedule of Classes for Fall 2025 will be available on Saturday, May 3, 2025.
2. Continuing students can view the date and time of their enrollment window for Fall 2025 beginning on Monday, May 12, 2025.
3. Continuing student enrollment for Fall 2025 is from Monday, May 19, 2025, to Wednesday, June 4, 2025.
4. New graduate students can begin enrollment for Fall 2025 on Monday, June 9, 2025.
5. New transfer students can begin enrollment for Fall 2025 on Monday, June 9, 2025.
6. New freshmen can begin enrollment for Fall 2025 on Monday, August 25, 2025.
7. Open enrollment for Fall 2025 for continuing students is from Wednesday, June 4, 2025, to Monday, September 15, 2025, and from Thursday, September 18, 2025, to Friday, October 10, 2025.
8. The waitlist release for Fall 2025 will occur on Wednesday, September 17, 2025, between 5:00 p.m. and 8:00 p.m.
9. The 18-unit enrollment limit for Fall 2025 will be lifted on Tuesday, September 2, 2025, at noon.
10. The last day to enroll in Fall 2025 courses to avoid loss of student status is Friday, October 17, 2025, at 5:00 p.m.
11. Tuition and fees for Fall 2025 must be paid by Monday, September 15, 2025, to avoid classes being dropped.
12. Tuition and fees for Fall 2025 must be paid by Friday, October 17, 2025, to avoid loss of student status.
13. Fall Quarter 2025 begins on Monday, September 22, 2025.
14. UCI for Fall Quarter 2025 begins on Thursday, September 25, 2025. It is the first day of classes.
15. The waitlists for Fall 2025 will be deactivated on Friday, October 10, 2025, at 5:00 p.m.
16. The last day to add or drop a Fall 2025 course, or change grading options or units without dean’s approval, is Friday, October 10, 2025, at 5:00 p.m.
17. Graduate students must submit part-time study petitions to the Graduate Division by Wednesday, October 15, 2025, at noon.
18. The deadline to pay tuition and fees late or enroll late for Fall 2025 is Friday, October 17, 2025, at 4:00 p.m.
19. Undergraduate students must submit part-time study petitions to the Registrar by Friday, October 17, 2025, at 5:00 p.m.
20. The last day to drop a Fall 2025 course without receiving a “W” grade, with dean’s approval, is Friday, November 7, 2025, at 5:00 p.m.
21. The last day to change variable units for a Fall 2025 course, with dean’s approval, is Friday, November 7, 2025, at 5:00 p.m.
22. The last day to change the grading option for a Fall 2025 course, withdraw from a course, or withdraw from the term with dean’s approval is Friday, December 5, 2025, at 5:00 p.m.
23. Instruction for Fall Quarter 2025 ends on Friday, December 5, 2025.
24. Final examinations for Fall Quarter 2025 will take place from Saturday, December 6, 2025, to Friday, December 12, 2025.
25. Fall Quarter 2025 ends on Friday, December 12, 2025.
26. Final grades for Fall Quarter 2025 must be submitted by Thursday, December 18, 2025, at 5:00 p.m.
27. Grades for Fall Quarter 2025 will be available in StudentAccess on Thursday, December 18, 2025, at 10:00 p.m.
28. Official transcripts for Fall Quarter 2025 will be available on Monday, December 22, 2025.
29. Degrees for Fall 2025 will post to transcripts on Friday, February 6, 2026.
30. Veterans Day will be observed on Tuesday, November 11, 2025.
31. Thanksgiving recess will be observed on Thursday, November 27, 2025, and Friday, November 28, 2025.
32. UCI Winter Break 2025 will occur from Monday, December 15, 2025, to Thursday, January 1, 2026.
33. Winter Administrative Recess will occur from Wednesday, December 24, 2025, to Thursday, January 1, 2026.

UCI Academic Calendar Winter 2026

1. The Schedule of Classes for the Winter 2026 term will be available on November 1, 2025.
2. Continuing students may view the date and time of their enrollment window for Winter 2026 beginning on November 10, 2025.
3. Enrollment by window for Winter 2026 (7:00 a.m. start date to 7:00 p.m. end date) will take place from November 17, 2025, to December 5, 2025.
4. Open enrollment for Winter 2026 will begin on December 5, 2025, and run through December 15, 2025.
5. The fee payment deadline for Winter 2026, to pay tuition and fees without classes being dropped, is December 15, 2025 (4:00 p.m. PT at Central Cashier; 5:00 p.m. PT if paying online).
6. The waitlist release for Winter 2026 will occur on December 17, 2025, between 5:00 p.m. and 8:00 p.m.
7. The 18-unit enrollment limit for Winter 2026 will be lifted at noon on December 18, 2025.
8. A second open enrollment period for Winter 2026 will run from December 18, 2025, to January 16, 2026.
9. Winter Quarter 2026 will begin on January 2, 2026.
10. Instruction for Winter Quarter 2026 will begin on January 5, 2026.
11. Waitlists for Winter Quarter 2026 will be deactivated at 5:00 p.m. on January 16, 2026.
12. The last day to add a Winter 2026 course, drop a course without dean’s approval, or change grading options or variable units without dean’s approval is January 16, 2026, at 5:00 p.m.
13. Martin Luther King, Jr. Day will be observed on January 19, 2026.
14. Graduate students must submit part-time study petitions to the Graduate Division for Winter 2025–2026 by January 21, 2026, at 12:00 noon.
15. The deadline to pay tuition and fees late or to enroll late is January 23, 2026, at 4:00 p.m.
16. Undergraduate students must submit part-time study petitions to the Registrar by January 23, 2026, at 5:00 p.m.
17. The last day to enroll in courses to avoid loss of student status is January 23, 2026, at 5:00 p.m.
18. The last day to drop a course without receiving a “W” grade, with dean’s approval, is February 13, 2026, at 5:00 p.m.
19. The last day to change variable units for a course, with dean’s approval, is February 13, 2026, at 5:00 p.m.
20. The last day to change the grading option for a Winter 2026 course, to withdraw from a course, or to withdraw from the Winter 2026 term with dean’s approval is March 13, 2026, at 5:00 p.m.
21. Instruction will end on March 13, 2026.
22. Final examinations for Winter Quarter 2026 will take place from March 14, 2026, to March 20, 2026.
23. Winter Quarter will end on March 20, 2026.
24. Final grades must be submitted by March 26, 2026, at 5:00 p.m.
25. Grades will be available in StudentAccess on March 26, 2026, at 10:00 p.m.
26. Official transcripts will be available on March 30, 2026.
27. Degrees for Winter 2026 will post to transcripts on May 1, 2026.

UCI Academic Calendar Spring 2026

1. The Schedule of Classes for Spring 2026 will be available on Saturday, February 7, 2026.
2. Presidents’ Day will be observed on Monday, February 16, 2026.
3. Continuing students may view the date and time of their enrollment window for Spring 2026 beginning on Monday, February 16, 2026.
4. Enrollment by window for Spring 2026 (7:00 a.m. start date to 7:00 p.m. end date) will take place from Monday, February 23, 2026, to Wednesday, March 11, 2026.
5. Open enrollment for Spring 2026 will begin on Wednesday, March 11, 2026, and run through Monday, March 16, 2026.
6. The fee payment deadline for Spring 2026, to pay tuition and fees without classes being dropped, is Monday, March 16, 2026.
7. The waitlist release for Spring 2026 will occur on Wednesday, March 18, 2026, between 5:00 p.m. and 8:00 p.m.
8. The second open enrollment period for Spring 2026 will run from Thursday, March 19, 2026, to Friday, April 10, 2026.
9. The 18-unit enrollment limit for Spring 2026 will be lifted at noon on Thursday, March 19, 2026.
10. Spring Quarter 2026 will begin on Wednesday, March 25, 2026.
11. Cesar Chavez Day will be observed on Friday, March 27, 2026.
12. Instruction for Spring Quarter 2026 will begin on Monday, March 30, 2026.
13. Waitlists for Spring Quarter 2026 will be deactivated at 5:00 p.m. on Friday, April 10, 2026.
14. The last day to add a Spring 2026 course, drop a course without dean’s approval, or change grading options or variable units without dean’s approval is Friday, April 10, 2026, at 5:00 p.m.
15. Graduate students must submit part-time study petitions to the Graduate Division for Spring 2026 by Wednesday, April 15, 2026, at 12:00 noon.
16. The last day to enroll in Spring 2026 courses to avoid loss of student status is Friday, April 17, 2026, at 5:00 p.m.
17. The deadline to pay tuition and fees late or to enroll late for Spring 2026 is Friday, April 17, 2026, at 4:00 p.m.
18. Undergraduate students must submit part-time study petitions to the Registrar for Spring 2026 by Friday, April 17, 2026, at 5:00 p.m.
19. The last day to drop a Spring 2026 course without receiving a “W” grade, with dean’s approval, is Friday, May 8, 2026, at 5:00 p.m.
20. The last day to change variable units for a Spring 2026 course, with dean’s approval, is Friday, May 8, 2026, at 5:00 p.m.
21. Memorial Day will be observed on Monday, May 25, 2026.
22. The last day to change the grading option for a Spring 2026 course, to withdraw from a Spring 2026 course, or to withdraw from the Spring 2026 term with dean’s approval is Friday, June 5, 2026, at 5:00 p.m.
23. Instruction for Spring Quarter 2026 will end on Friday, June 5, 2026.
24. Final examinations for Spring Quarter 2026 will take place from Saturday, June 6, 2026, to Thursday, June 11, 2026.
25. Spring Quarter 2026 will end on Friday, June 12, 2026.
26. Commencement for Spring 2026 will be held from Friday, June 12, 2026, to Monday, June 15, 2026.
27. Graduate hooding for Spring 2026 will be held on Saturday, June 13, 2026.
28. Final grades for Spring Quarter 2026 must be submitted by Thursday, June 18, 2026, at 5:00 p.m.
29. Grades for Spring Quarter 2026 will be available in StudentAccess on Thursday, June 18, 2026, at 10:00 p.m.
30. Official transcripts for Spring Quarter 2026 will be available on Monday, June 22, 2026.
31. Degrees for Spring 2026 will post to transcripts on Friday, July 24, 2026.

UCI Academic Calendar Summer 2026

1. The Schedule of Classes for Summer Sessions 2026 will be available on Sunday, March 1, 2026.
2. Juneteenth will be observed on Friday, June 19, 2026, during Summer Session I.
3. Summer Session I will begin and instruction for Summer Session I will start on Monday, June 22, 2026.
4. The Summer 10-week session will begin, and instruction for the Summer 10-week session will start on Monday, June 22, 2026.
5. Independence Day (observed in the summer session schedule) is noted on Friday, July 3, 2026.
6. Instruction for Summer Session I will end on Monday, July 27, 2026.
7. Final examinations for Summer Session I will take place on Tuesday, July 28, 2026, and Wednesday, July 29, 2026.
8. Summer Session I will end on Wednesday, July 29, 2026.
9. The deadline to submit final grades for Summer Session I is Wednesday, August 5, 2026.
10. Grades for Summer Session I will be available in StudentAccess on Wednesday, August 5, 2026, at 10:00 p.m.
11. Official transcripts for Summer Session I will be available on Friday, August 7, 2026.
12. Instruction for the Summer 10-week session will end on Thursday, August 27, 2026.
13. Final examinations for the Summer 10-week session will be on Friday, August 28, 2026.
14. The Summer 10-week session will end on Friday, August 28, 2026.
15. The deadline to submit final grades for the Summer 10-week session is Monday, September 7, 2026.
16. Grades for the Summer 10-week session will be available in StudentAccess on Monday, September 7, 2026, at 10:00 p.m.
17. Official transcripts for the Summer 10-week session will be available on Wednesday, September 9, 2026.
18. Summer Session II will begin, and instruction for Summer Session II will start on Monday, August 3, 2026.
19. Instruction for Summer Session II will end on Friday, September 4, 2026.
20. Final examinations for Summer Session II will take place on Tuesday, September 8, 2026, and Wednesday, September 9, 2026.
21. Summer Session II will end on Wednesday, September 9, 2026.
22. The deadline to submit final grades for Summer Session II is Tuesday, September 15, 2026.
23. Grades for Summer Session II will be available in StudentAccess on Tuesday, September 15, 2026, at 10:00 p.m.
24. Official transcripts for Summer Session II will be available on Thursday, September 17, 2026.
25. Degree postings for all Summer Sessions (degree awarded date: Wednesday, September 9, 2026) will appear on Friday, October 23, 2026.

For more on the UCI Academic Calendar 2025-2026, visit the University of California, Irvine Calendar website.